During testing of NITRITE level ::: Add RXSOL TK6  drop by drop , mixing with the stirring rod until  For endpoint ORANGE to BLUE / GREENISH colour just appears / develop. 

This reagent is part of RXSOL-62-5507-001 ( Complete Set ) :::  www.rxmarine.com/nitrite-test-kit

Technical Bulletin

Product Label

RXSOL TK6 gives endpoint ORANGE to BLUE / GREENISH colour just appears / develop. CALCULATION : 50 X Number of DROPS of TK6