{"product_id":"presto-black-steel-mkp-rpl-pc9","title":"Presto Black® Steel (MKP\/RPL\/PC9)","description":"\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003e\u003cu\u003ePRODUCT DESCRIPTION\u003c\/u\u003e\u003c\/h1\u003e\n\u003cp\u003ePRESTO BLACK STEEL is a room temperature blackening solution for all iron and non-stainless steels. Supplied as a liquid concentrate, the chemical is mixed with water to make an immersion blackening solution to form a clean black finish on a wide variety of steel surfaces. The black coating needs to be coated with a suitable rust preventative sealant such as an oil or a clearcoat.\u003c\/p\u003e\n\u003cp\u003ePrevious names include Presto Black MKP \/ RPL \/ PC-9 and is used in the same manner.\u003c\/p\u003e\n\u003ch1\u003e\u003cu\u003eOPERATING CONDITIONS\u003c\/u\u003e\u003c\/h1\u003e\n\u003cul\u003e\n\u003cli\u003eInitial Bath Make-Up                          Mix at 10%, by volume, in tap water.\u003c\/li\u003e\n\u003cli\u003eBath Replenishment                            Add concentrate as needed.\u003c\/li\u003e\n\u003cli\u003eEquipment Construction                     Tank: Polypropylene, PVC, or other acid-proof material.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e                                                                Racks, baskets, barrels: Polypro or PVC coated steel.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eVentilation                                          Not necessary. No fumes produced. Filtration\/Recirculation                       Desirable on larger tanks. Use acid-proof pump and\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003e                                                                 50-100 micron polypropylene filter element.\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003ch1\u003e\u003cu\u003eBLACKENING PROCEDURES\u003c\/u\u003e\u003c\/h1\u003e\n\u003cp\u003eFor best results, the parts require thorough cleaning, surface conditioning, blackening and sealing with an appropriate rust preventive compound, as follows:\u003c\/p\u003e\n\u003cp\u003e \u003c\/p\u003e\n\u003col\u003e\n\u003cli\u003eCLEAN the parts to remove oils and shop\n\u003cul\u003e\n\u003cli\u003eFor lighter oils and soils, use SAFE SCRUBST biodegradable liquid cleaner, mixed at 20% by volume and operate at 150° Typical immersion time of 8 minutes.\u003c\/li\u003e\n\u003cli\u003eFor heavy-duty cleaning, use PRESTO KLEENHP, mixed at 8 – 12oz\/gal and operated at 150° Typical immersion time of 8 minutes.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\u003cli\u003eRINSE thoroughly in clean water; 30\u003c\/li\u003e\n\u003cli\u003eACTIVATE SURFACE by immersing parts SAFE PREPSurface Conditioner, mixed at 10% by volume, and operated at room temperature. Typical immersion time of 1 – 2 minutes.\u003c\/li\u003e\n\u003cli\u003eRINSE thoroughly in clean water; 30\u003c\/li\u003e\n\u003cli\u003eBLACKEN parts by immersing in the PRESTO BLACK solution for 1 – 3 minutes, or until parts are uniformly black.\u003c\/li\u003e\n\u003cli\u003eRINSE thoroughly in clean water; 30\u003c\/li\u003e\n\u003cli\u003eSEAL the black finish in DRI TOUCHAMBER IRP2 dry-to-touch finish, or other appropriate rust preventive topcoat.\u003c\/li\u003e\n\u003c\/ol\u003e\n\u003ch1\u003e\u003cu\u003eBATH MAINTENANCE\u003c\/u\u003e\u003c\/h1\u003e\n\u003cp\u003eAs the Presto Black bath operates, its concentration will gradually diminish, and the reaction will slow down. The bath can be replenished by adding fresh Presto Black Steel concentrate. The bath can be tested by using a simple CCK – 1 Color Change Kit, available from Birchwood Technologies. This test will determine how much fresh chemical needs to be added to the bath.\u003c\/p\u003e\n\u003cp\u003e\u003ca href=\"https:\/\/birchwoodtechnologies.com\/wp-content\/uploads\/2023\/02\/5602_Presto_Black_Steel_SDS.pdf\" rel=\"noopener\" target=\"_blank\"\u003eSDS\u003c\/a\u003e\u003c\/p\u003e","brand":"Birchwood Technologies","offers":[{"title":"8oz","offer_id":48016906289467,"sku":"74PC9","price":22.0,"currency_code":"USD","in_stock":true},{"title":"32oz","offer_id":48016906256699,"sku":"74PC932","price":50.0,"currency_code":"USD","in_stock":true},{"title":"Gallon","offer_id":48016906191163,"sku":"560250","price":190.0,"currency_code":"USD","in_stock":true},{"title":"5 Gallon","offer_id":48016906223931,"sku":"74MKP5G","price":585.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0780\/7539\/6411\/files\/1gal_blue.jpg?v=1743102112","url":"https:\/\/maacaffestore.com\/products\/presto-black-steel-mkp-rpl-pc9","provider":"The Compleat Sculptor, Inc","version":"1.0","type":"link"}