Knock it Off!: Promax

Dual safe-acid descaler Low foaming

KNOCK IT OFF! Is a safe acid descaler that contains two types of acids that will dissolve difficult to remove scale. 

Packaging Variation

Manufacturer code UPC Size 1300680-4cs 841728102054 4 x 3.78 L


Production Specifications

KNOCK IT OFF! contains two types of acids that dissolve difficult to remove scale containing magnesium, calcium and silicates among others. KNOCK IT OFF! is corrosive to aluminum only. Non-corrosive to skin and steel. 


Clear liquid









Directions for Use

Preparation: Use unheated tap water for dilution.  

Heavy duty scale removal: Dilute 1 part KNOCK IT OFF! with 1 part water (1:1) or use full strength. 

Medium duty scale removal: Dilute 1 part KNOCK IT OFF! with 4 parts water (1:4). 

Light duty scale removal: Dilute 1 part KNOCK IT OFF! with 8 parts water (1:8). 

  1. Rinse off all loose scale with pressure sprayer and determine level of scaling.
  1. Fill or submerge the equipment slowly into recommended product dilution. Ensure the exposed tubing and walls have been in contact with the solution.
  1. Leave the descaling solution in contact for 30 minutes to 4 hours and periodically check scale removal by lightly scrubbing with a bristle brush on all contact surfaces. The amount of contact time will vary depending on the level of scale residues.
  1. Spent solution can be reused or poured down the drain with lots of water. If reusing the dilution liquid, start the process with the most concentrated dilution and the most scaled equipment.
  1. Rinse out equipment parts thoroughly 3-5 times with fresh water. Check the final rinse water with pH test strip to match incoming water pH (should be around pH 6). A separate neutralization step is not required.

NOTE: DO NOT let KNOCK IT OFF! dry on metal surfaces. Rinse surfaces well after descaling. 

FOR USE IN FOOD PLANTS: All food should be removed or covered prior to use and food contact surfaces are to be thoroughly rinsed with potable water so there will be no contamination of food as a result of its use. 


  • Washrooms  
  • Commercial Kitchens 
  • Cisterns 
  • Commercial Beverage Production 
  • Industrial Machinery 
  • Dip Tanks 

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