DPD N°4 Reagents Tablets (50) – for Pool Photometers TISHED50 then the hydrogen carbonate ion

then the hydrogen carbonate ion combines with these to form carbonic acid (which in turn dissolves into carbon dioxide and water) and water

Test parameter: Multi-parameter (Free Chlorine

Product type: Replacement / refill reagent (consumable)

Why pool test strips fail at high CYA (and what works better)

Get the results you need with 50 included tablets

DPD N°4 Reagents Tablets (50) – for Pool Photometers TISHED50 then the hydrogen carbonate ionDPD N4 Reagents Tablets (50) are photometer compatible replacement refill reagent tablets used for accurate pool & spa testing. Key Specs Product type: Replacement refill reagent tablets (consumable) Test parameter: Active oxygen Format: Tablet reagent (50 tablets) Shelf life: 2 years (sealed, stored properly) What this reagent does DPD N 4 is a reagent used by compatible photometers to measure Active oxygen. Water disinfected with persulfate