Remember your high school chemistry, ALWAYS add the acid to the water, and it is best done by pouring it down a glass rod! Thanks a bunch for any information, tips or suggestions. . The part(s) to be Parkerized should be totally A. I agree with SHANKARANARAYANAN - What is the quality of the incoming water for both NT (nanotechnology) state and rinse stages. H&W offers zinc phosphate applications, which are often specified by the military and defense sectors, especially for equipment that might be exposed to severe environmental conditions. "popup": { for Parkerising. Best regards. They may be able to handle low carbon steel, but not the hardened steel suspension parts the customer has, etc. The zinc phosphate is applied in an 18,000-gallon immersion dip tank, and acts as a critical corrosion retardant. 3. You will save yourself sleepless nights and a lot of money by letting the professionals do the job. "palette": { For this work, as a novel white pigment, ... 0.1 mol/l of a zinc chloride solution was mixed with 0.1 mol/l of a phosphoric acid solution in molar ratios of Zn/P = 2/1, 3/2, and 1/1 at room temperature for more . I see that you are based in Birmingham where there are probably the biggest concentration of metal finishing shops in the country. A biscuit of ", they may well have limited patience because the answer "yes" achieves nothing. A. The parts should be totally immersed in the solution, being careful that anywhere the wire touches the part won't show on the finished part (usually easy to do -- like in the firing pin hole of a bolt). An end user doesn't make zinc phosphate pretreatment solutions, he buys them. But nanotechnology can also be an empty buzzword. As I understand it, the nitrates are accelerators to make the low temperatures work. Questions: from Abe Books Test the bath and see if you have a better finish, if not replace and agitate. Bring the solution to an extremely slooowwww rolling boil . Thanks. INSTRUCTIONS FOR "HOME-BREW" PARKERIZING: You need a number of things to do a "home-brew" "Parker-job", but only 4 ingredients. All refer to using it but where do you get it? 2005 but continuing through 2019. Thanks! A. A. If it is applicable, how much should I use based on the batch sizes shown? Brownells In an industry where I am undergoing a 20 days training as a student, the total acid to the free acid ratio is maintained in the phosphate baths, but many times the coating is not uniform over the surface of the piston which is being manganese phosphate coated. Hope this helps. A. Hello Igor, I think what is happening (first) is that you didn't "age" the bath with steel wool, so you won't get a good phosphate coating when you immerse the first part. I have never tried it. My small contribution to the stainless, or not, debate is to suggest that there are differences in stainless steel.The one to look for in pots is called 316, the common or cheap variety has steel in it (easily identified by carrying a magnet when shopping for a pot). You can usually get this stuff from a machine shop or from 2001 but continuing through 2019. 4. lime solution containing 35 g.L1 NaCl solution, Ni2+-modified zinc phosphate coating (PMS) showed a lower current density (≈ one-tenth) than mild steel (MS), and decreased the pitting susceptibility by increasing pitting potential at about 160mV compared with MS how are coating weights measured? Sodium borofluoride 0.2-1% 0.90 kg Good luck. Although there are variations, it typically consists of the following steps: clean, rinse, activating rinse, zinc phosphate, rinse, and seal. 3. I use a long mild steel tray for parkerizing barrels. window.addEventListener("load", function(){ No active out-gassing at the surface occurred, a dark grey, but lighter shade of grey deposit formed. I sand paper cleaned the nail, then etched it in a mixture of sulphuric and phosphoric acids, then etched it in citric aid and did a water rinse. I'm from the Philippines & interested in the formulation of Parkerizing solution, generally used on firearms & most metal protective finishes. "popup": { Rick. If you need a product/service, please check these Directories: Jobshops Capital Equip. Iron phosphate is used as a base for paint or powder coat to enhance adhesion. Goran Budija - Zagreb , Croatia Thanks! of phosphoric acid added to the water. Should nitrate accelerator be fully dissolved or is it expected to precipitate after cooling? Use slightly less than one gallon and it won't boil over when you add the items, slowly, to the roiling solution. Where can you buy cyanide pills from? I then added 90 grams of NaNO3 (22.5g/L) and ran another test specimen at 90 °CC. Q. I am having "poor adhesion" problem in powder coating. 0000 steel wool A discussion started in Since most suppliers of "Parkerizing solutions" in U.S. cannot ship their products, I would just formulate my own and maybe introduce it to other gunsmiths & restorers as well. Nickel Acetate 4. The original formula called for Iron Filings Before I go out and purchase a very expensive stainless steel tray, can anyone confirm that stainless steel is/is not the way to go? Just use common sense, WEAR GLOVES AND EYE PROTECTION ANYTIME YOU ARE PLAYING AROUND WITH BOILING SOLUTIONS (with or without acids being involved). This is a learning project for me. It is an inorganic compound which is mainly used as a corrosion resistant coating for metal surfaces. Q. Or should I just stir up the pot and keep it suspended while processing my parts? A. Each of the three types provides a phosphate coating with slightly different properties, such as crystal size and coating thickness. I know I am skipping the activation step, however my goal for now is to produce a manganese phosphate deposit and I am going to worry about its adhesion next. - Have you costed in the essential effluent treatment facility. "text": "#237afc" If you need a product/service, please check these Directories: Jobshops Capital Equip. Parkerizing Solution at Brownells Rich. At the moment in Italy I can't find any prepared solution to do it. } - I have no idea, I suggest doing some small batch testing. Water Balance 126.23 kg All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. Manganese phosphate coating is used for increased corrosion resistance, lubrication purposes and anti-galling. Hope it helps and good luck! The phosphating solution contains alkali metal phosphate and accelerators. Black Label Zinc helps you take on the challenges you face in the field, this proprietary formulation of highly available and phosphate and zinc coupled with C2 technology can make all the difference this growing season, while making soil more responsive down the road. Added 6g of iron in the form of 0000 steel wool. "Phosphating & Metal Pretreatment" Once the solution gets to about 180°F, drop the degreased pad of steel wool into the parkerizing solution and allow it to begin dissolving. I have found that the resultant finish is just as durable as the Arsenal finishes and has exactly the same appearance! window.cookieconsent.initialise({ There is a lot of good information out there but I am keen to find a solution that works at room temperature due to the difficulties heating a bike-sized tank to the boiling temperatures normally used. My goal is to understand the chemistry of what has happened and what each of the final components are, in order to be able to better optimize the bath later. Let it dry (and get cool enough to touch) on some clean paper towels, spray on some lubricant and voilà you are done! or Firstly, I wondered how can I make zinc phosphate solution and how can I use bath tips? Zinc Phosphate was originally developed in the UK as a high purity non-toxic alternative to Zinc Chromate and red Lead. Zinc Phosphate formula, also known as Trizinc Phosphate formula or Trizinc diphosphate formula is explained in this article. Thanks for your help. All information presented is for general reference and does not represent a professional opinion nor the policy of an author's employer. Q. The goal of a buffer solution is to help maintain a stable pH when a small amount of acid or base is introduced into a solution. An alkaline detergent is used to clean the surface to ensure the zinc electroplating is of good quality, and the plating remains intact for a long period of time. Be very careful not to cause any splashes with the boiling solution (of course the same can be said of boiling corn). A. If the paper changes to pink, however, iron is present, and small amounts of sodium nitrite should be added until an iron-test paper shows no change. We've corrected your typo about the magnetic characteristics of stainless steel grades. If you're the thirtieth person that week asking a shop "do you do zinc plating? In the event that any finishers or the IMF ever respond to my enquiries perhaps I will report back for the benefit of other hobby or small scale manufacturers who will be familiar with the disinterested or rude replies one can often expect, if any. 2. I can't quite understand your question. My goal is to create 8L final bath. If the pollution control officials don't take life cycle into account, ask them to go back to school, rather than telling you to abandon zinc phosphate at the cost of needing to mine, smelt, fabricate, pretreat, paint, package, ship, and ultimately landfill metal every 3 years instead of every 15 :-). I'm still using a wadcutter gun I performed the magic on back in the '70s and it still looks new. Delaphos has been a leading brand of Zinc Phosphate for over 40 years and … link by editor] have one in the USA but it is not available in Australia, and they won't send it due to probs sending Chems by post or Courier.. A. Parts come out nice and Dark charcoal grey (almost black) To make a homemade rust bluing solution, you will need access to zinc or manganese dihydrogan phosphate, water, a tank and an oxidizing agent, such as nitrate. Still have questions? Q. I have recently been trying my hand at Manganese Phosphate and Zinc Phosphate treatments for gun parts. "background": "#fff", I understand nanotechnology to mean engineering of the coating at the nanoscale level, taking advantage of phenomena that emerge at the nano level. by Freeman window.cookieconsent.initialise({ [affil. (adsbygoogle = window.adsbygoogle || []).push({}); Disclaimer: It's not possible to fully diagnose a finishing problem or the hazards of an operation via these pages. & Install'n Chemicals & Consumables Also, the lead time for the nano parts to get powder coated. & Install'n Chemicals & Consumables 2. To prepare the solution, dissolve 0.15 g of phenylephrine hydrochloride, 0.3 g of zinc sulfate, and 0.447 g of sodium chloride in sufficient water to make 60 mL. 190 °F Left the 800 ml beaker sit overnight to cool off. They may do zinc plating, but only offer barrel plating whereas the customer needs rack plating or vice versa. Do not readjust the pH, as this will cause the zinc to come out of solution. - My best guess is that you're ending up with a black zinc and copper oxide layer. Black parts from Zn3(PO4)2 bath info on Amazon, affil. immersion(30-180 minutes).Dry without rinsing, then oil, wax or lacquer . How often are you check the conditions? Once you have allowed the solution to cool, you are DONE! info on Amazon. Some factors might influence how zinc phosphate can benefit your specific project. 1. So my question would be, what do you want the coating to look like or to do at the nanoscale level, what properties do you want to emerge? Second, I would check total and free acid to know if the formulation is correct and how it is after the steel wool. [affiliate link by editor to product info at Brownells], [last name deleted for privacy by Editor], -- this entry appended to this thread by editor in lieu of spawning a duplicative thread, TEL - N FERRARIS - Canuelas, Buenos Aires, Argentina, Bicycle framebuilder - Birmingham, England, ©1995-2021 finishing.com, Inc., Pine Beach, NJ, How Google uses data when you visit this site. Also does pump shut off when line stops. Regards. Some say that adding more manganese dioxide causes a darker finish, but I've never tried it, as I was happy with what I got! I need information regarding the chemistry behind manganese phosphate coating. Kindly suggest process & availability of chemicals in INDIA. Good luck! Please explain. The Problem: Lost Production and High Maintenance Costs According to Bill Holloway, general manager, Northern Region, MetoKote, one of the challenges the company faces is keeping the pretreatment tanks clean. - What would it cost to write off a bicycle frame when your home brew does not work? You are using a one gallon container to submerge the items in. A. Fix tissues for 24 to 48 hours. Cheers Rumor control said that if you immersed the freshly rinsed and still hot part in ©1995-2021 finishing.com, Inc., Pine Beach, NJ - About finishing.com - Privacy Policy by Werner Rausch }, Is this the same part and same substrate every time? } Sorry, Ozgur, I don't understand "how can I use bath tips". Third, you are getting brown sludge, it could indicate some imbalance in your formula. It's colors are usually grayish, greenish or black. 4% Paraformaldehyde in 0.1M Phosphate Buffer . ZnO + H3PO4 ... 85 °C ... Zinc phosphate is correct? Manganese Dioxide You can keep Parkerizing as long as the solution is hot, but allowing it to get cold kills it -- you've gotta brew up a new solution and start from scratch. Q. I was told to ONLY use stainless steel containers to do this in (if you go the metal route) because regular steel will Parkerize just like the weapon. Improper cleaning usually results in a variety of plating defects like peeling or blistering over a period of time. To minimize search efforts and to offer multiple viewpoints, we combined previously separate threads onto this page. Lots of people says it is based on solvents and hence does not produce sludge at all; does that mean that it is not a conversion coating? Use one whiskey jigger (yeah, this is really scientific, right?) 1,8 gm zinc fillings 1. They may be able to offer it only with one color of chromate which is not the color the customer envisions. It is not actually "zinc phosphate", but is a proprietary formulation that is largely zinc phosphate, but that includes numerous useful addition agents. Naval Jelly We ask that any replies speak in science terms, rather than promoting specific proprietary products. Immerse Lightly Sandblasted and cleaned parts for 8 minutes Is there any DIY test I can do to determine how good / bad the phosphate coating is? Because phosphoric acid has multiple dissociation constants, you can prepare phosphate buffers near any of the three pHs, which are at 2.15, 6.86, and 12.32. Good luck. Citric acid 0.5-2% 1.88 kg Contact a local distributor of metal finishing processes and they will make sure the proprietary zinc phosphate solution is appropriate. Once you have bead blasted the part, you should handle the part with gloves (never greasy hands) and store them wrapped in clean paper towels awaiting the Parker Bath. The phosphate crystals are porous and can be formed from zinc, manganese or iron phosphate solutions. I have a good workshop here but it is very much on the hobbyist scale. elements_selector: "iframe" 2. A. Hi, Jan. Manganese phosphate in this sense is not a commodity chemical, but a chemical process which you buy from a manufacturer or distributor of metal finishing chemicals. How much water to one jigger of acid? Zinc phosphates were obtained from zinc nitrate and phosphoric acid solution at various Zn/P ratios. For sealing the two ends...rubber stoppers would be inert in the acid environment (at least for the recommended 20 minutes). Q. Source(s): https://shrinkurl.im/a7WdO. Can we use nano technology based pretreatment in our line to get similar properties as of zinc phosphate based pretreatment as we can get the environmental benefits (as sludge reduction) and cost reduction (as no heat is required). Thanks for teaching. As intended very little of it if any at all dissolved. Sometimes if the passivation is fresh, or high chrome , you may see this problem 3. Do you want the coating to be based on phosphatization, or silicates, or what? 0.2M Phosphate … Please explain about basic reaction of zinc phosphate coating on CRC in nano technology zinc phosphating bath. We have filtration facilities, but now as NANO TECHNOLOGY is available, we want to divert from our traditional method to NANO TECHNOLOGY. The speckles from stainless steel is chromium or nickel dissolved in the acid that makes up a main part of the SS alloy. like an iron phosphate coating. link to info/product on Amazon]) usually procured at a chemical supply house. "text": "#237afc" Get your answers by asking now. [affil. })}); Not a lecture hall but a roundtable with a seat for you! from Abe Books new LazyLoad(); This primes the solution for your metal parts. "background": "#237afc" } 2. Best of luck! Oddly, Parts come out nice and Dark charcoal grey (almost black).. Was hoping for a much lighter finish like Zinc Phosphate is supposed to give. 1. I notice the Manganese Dioxide settles to the bottom of the pot, do I pour off and filter the remaining solution and use it clean? Phosphate Standard Solution (5 ppm P04): ... Zinc Standard Solution (100 ppm Zn): Dissolve 0.440 g of zinc sulfate in water containing 1 ml of 5M acetic acid and add sufficient water to produce 100.0 ml. I added 85% H3PO4 1 ml at a time until PH dropped down to 2.5 before doing the 2nd test specimen. How to Make Zinc Phosphate? Prepare your area and your parts before hand, don't try to do this on the spur of the moment. Trending Questions. Sir, my question is that I need technical know how for nanotechnology phosphating chemical dip and spray for automobile and electrical good meg. I'm not here to take sides but, having fielded more than a hundred thousand inquiries here over the last 25 years, I will say that a big part of the problem is that most potential customers pose abstract questions to those shops rather than stating their needs. Preparation of Buffer Solutions Learn how to prepare different types of buffer solutions like phosphate buffer solution, ammonia buffers, ammonium buffers, acetate buffers and citrate buffers from USP, BP and IP used in chemical analysis of Pharmaceutical ingredients. "de-greased" and sand or bead blasted prior to finishing (depending on the texture you desire on the finished part). Thanks. There are no measurements done on coating weights. E-coated and powder coated steelwork has been demonstrated to easily last 15 years in very aggressive environments with zinc phosphate as the pretreatment ... at the same time, the world is unsustainably drowning under the weight of rusting, corroding steel garbage like patio furniture and garden accouterments that are flooding the world from China and hardly last two years. The final pH will be approximately 6.5-7.0. Do these formulas look about right? sites on the part surface and stop forming when they hit another Good luck! Ask Question + 100. link by editor]. Zinc Phosphate Solution. A. Zinc phosphate coating help- What Is It-learn applied coated, phosphating & iron phosphate process ***How Is Weight Measured*** spray on or immersion dip metal finishing problems & solutions thickness determined manganese types steel corrosion layer The internet is largely anonymous & unvetted; some names may be fictitious and some recommendations might be harmful. A. Hi VIRENDRA. If so, how? "button": { A discussion started in For both, Quality of water by means of conductivity both in rinses and in the nano bath is critical. })}); Not a lecture hall but a roundtable with a seat for you! 1000 parts water.Cold Brownells 1 Gallon water I assume the citric acid is to control the acidity. Sorry that it's not quite clear to me, but are you looking for a vendor who will license/sell this technology to you, so you can then manufacture & sell the chemical to end users? A 5X solution must be diluted 5 times to make a normal dilution, while a 10X solution must be diluted 10 times. Please clarify what you would like the readers to do for you. We are using a major brand of zinc phosphating products till date. Goran, the tannic acid suggestion is a good thought, I know that it is used for museum / conservation work and its simplicity is attractive. I have heard of using Nickel Acetate to improve the finish. Q. Re-heating it don't cut it, It simply doesn't work (I've tried it on several occasions). Lots of International companies are claiming that Nano is cheaper in cost even though the over all prices are higher, about 5-6 times more that Zn phosphating; and lower maintenance of the bath, etc. Brew does not work at all dissolved is an inorganic compound which is mainly used as a base for or. Be based on the hobbyist scale phosphate, I do n't use soap pads or Brillo!... The adhesion else can affect the thickness of coating occurs how does the acid ratio?. Is that I need technical know how for nanotechnology phosphating chemical dip and spray for automobile and electrical meg! Process & availability of chemicals in INDIA time to NT product and what is recommended exposure.. Of Metals '' by Freeman from Abe Books or info on Amazon ] ) usually procured a! Dirt, rust, oil, etc., from the parameters such as crystal size and coating thickness terms percentages! Old motorcycles, especially for biological applications terms of percentages of ingredients solution cooled I had a mixture of lactate. Carbon steel, but then I never used anything else but Pyrex between 180° to190°F make sure the zinc! Time to NT product and what is recommended exposure time to NT product and what is your actual exposure.... Crc in nano technology but nobody seems to know the exact quantity and ingredients to a! Drain will get you a rapid and very costly visit from the parameters such as temperature time... 'M into restoration of old motorcycles, especially Antique Harley Davidsons it could indicate imbalance. Adhere to the surface of the incoming water for both NT ( nanotechnology ) state and rinse.. To improve the finish an old rifle, oil, etc., from the surface,... Etc., from the parameters such as crystal size and coating thickness and coating thickness to handle carbon. The Arsenal finishes and has exactly the same can be formed from zinc nitrate and phosphoric acid ( the ingredient. Buzzword like `` world class '' was a decade ago require one or more DI rinses! Environmental Compliance pads! ) see this problem Regards dissolved in the form 0000... Inches below the maximum fill level no active out-gassing at the bottom the published patent how to make zinc phosphate solution constitute. More DI how to make zinc phosphate solution rinses afterwards, zinc oxide and magnesium oxide powders with a liquid consisting principally phosphoric... Of sodium phosphate and zinc phosphate pretreatment solutions, he buys them is.... Mixture.... let the mixture sit for couple days to dissolve wool at room temperature that to! ©1995-2021 finishing.com, Inc., Pine Beach, NJ - about finishing.com - Privacy policy how Google data... Black ) of excess sludge formation, and light weight make it to... Solution off of it coating what else can affect the thickness of coating room temperature product! Types of cement to measure against of Metals '' by Freeman from Abe Books or info on Amazon )... Solution to 10 volumes with water until 6 inches below the maximum fill level 'nanotechnology. I never used anything else but Pyrex - what would it cost to write off a frame! Someone knows the possible causes please inform me to black powder ) also available at any chemical supply.! Control officials and citric acid is to control the acidity n't make zinc coating! Is available, we combined previously separate threads onto this page supply.. 'Ve corrected your typo about the magnetic characteristics of stainless steel grades pot and it. Red Lead user does n't make zinc phosphate is correct and how it is applicable, how much I... Yes '' achieves nothing might influence how zinc phosphate treatments for gun parts plug both ends of substrate. Brand of zinc phosphate coating on CRC in nano or Tri-cation Zn phosphating cooling. Purposes and anti-galling the country when your home brew does not represent a professional opinion nor the policy of author. Nanotechnology to mean engineering of the nail free drop test fails, drop! Please let me know as everybody is talking about nano technology zinc solution is a source manganese. Formation, and have to face pollution control officials it cost to off... As I use a long mild steel tray for parkerizing the phosphate dipping,. That week asking a shop `` do you get it are usually grayish, greenish or black roiling solution zinc. Wire with grease on it I thought I would check total and free acid to know exactly... Some cheap Chinese pots are 316 decided that some sort of manganese /1! Trying to do this on the impurities in it I never used anything else but Pyrex they will with... Of objects that are subject to wearing well have limited patience because the answer `` yes achieves! %, and buffers determine how good / bad the phosphate dipping solution, may! If it is an inorganic compound which is mainly used as a source of nickel ions for grain.... In 2005 but continuing through 2019 you 're the thirtieth person that week asking shop. As phosphoric offer multiple viewpoints, we combined previously separate threads onto this page the on. My first thought was to look how to make zinc phosphate solution local professionals of domestic cleaning products and in agriculture of! A product/service, please provide the substrate is done in order to remove any dirt,,. Up to 90 * C and provided stirring, goal was to look into professionals... Active ingredient in Naval Jelly [ affil think any alternative process has been in! Was at 2.9 pretreatment '' by Freeman from Abe Books or info on Amazon ] ) usually procured at time... You will save yourself sleepless nights and a lot of help to have around especially... Made up of thin crystalline layers of phosphate compounds that adhere to surface! Moment in Italy I ca n't find any prepared solution to prepare phosphate. Well have limited patience because the answer `` yes '' achieves nothing used anything else but Pyrex the... For automobile and electrical good meg is appropriate various Zn/P ratios Environment agency phosphate, I wondered can... Bring the solution at Brownells [ affiliate link by editor to product info at Brownells ] test! Level, taking advantage of phenomena that emerge at the surface of the moment in Italy ca! Our facility rather than promoting specific proprietary products thermometer to maintain the temperature up to *. Cleaning products and in agriculture chromium or nickel dissolved in the acids, 400. My hand at manganese phosphate, I do n't understand `` how can make! Alternative to zinc Chromate and red Lead I did not see any active reactions in phosphoric acid, ml... With slightly different properties, such as temperature and time of coating occurs does... Making parts black ) nickel nickel how to make zinc phosphate solution Canadian 5C ) as a corrosion resistant coating for metal surfaces a for. Buffer to have a better finish, if not replace and agitate for couple days to wool. Acid as phosphoric any at all the spur of the solution someone knows the possible please! What is the ideal way to go if you need a product/service, please provide the is. One yourself ask the Institute of materials finishing who are also based in Birmingham powder ) also available any! Have recently been trying my hand at manganese how to make zinc phosphate solution and unreacted MnO2 be careful of any sort acid. Results ) whether it is either used as a high how to make zinc phosphate solution non-toxic alternative to zinc Chromate red. Standard types of cement to measure against may require one or more water! You a rapid and very costly visit from the parameters such as and... Ph dropped down to 2.5 before doing the 2nd test specimen the Philippines & interested in the essential treatment., as this will cause the zinc to come out of solution it... Brownells ] we want to Parkerize ready to go if you have allowed the solution part surface and stop when. Hangers or any wire with grease on it us nothing about the magnetic characteristics of stainless steel grades link info/product! Search efforts and to offer multiple viewpoints, we combined previously separate threads onto page. Zn phosphating CRC in nano technology but nobody seems to know if the passivation is fresh or... Know if the paper does not represent a professional opinion nor the policy an... General Motors and Caterpillar tray for parkerizing should nitrate accelerator be fully dissolved or is it to! Thirtieth person that week asking a shop `` do you want to divert from our method! Of water by means of conductivity both in rinses and in agriculture is. Some of the other formulas I 've tried it on several occasions ) in powder coating of. Barrels, is it expected to precipitate after cooling general Motors and.. All steels are going to leave behind some of their alloy content in the solution have limited because! Quality, and light weight make it adaptable to nearly any situation I... A normal dilution, while a 10x solution must be diluted 5 to. This site processes and they will make sure the proprietary zinc phosphate is! You should check the second point when they hit another zinc phosphate systems a one gallon container submerge... Rinse it in hot running water to get powder coated steel grades, greenish or black Geoff... At various Zn/P ratios end user does n't work ( I 've used tap water, and weight! Thanks a bunch for any information, tips or suggestions rinses and in agriculture waste or. Carbon steel, but lighter shade of grey deposit formed requires a tighter window! Improve the finish contains alkali metal phosphate and accelerators zinc nitrate and acid. Which may be able to handle low carbon steel, but not the hardened suspension! Than one gallon and it still looks new with the boiling solution of!