Check the listing for details. LaMotte CH2 Calcium Hardness 30ml, Exp 6/2024, 7041-G, Color Q reagent. Condition: New. Listed at 19.99 USD. LaMotte 7041-G CH2 liquid reagent for calcium hardness, 30 ml - 7041G for Color Q 2056, New *** Check out more Lamotte Products (Click Here) Maximum shelf life for LaMotte Reagents from production date: P-6740-G DPD 1A liquid reagent for free chlorine, 24 months. P-6741-G DPD 1B liquid reagent for free chlorine, 12 months. P-6743-G DPD 3 liquid reagent for total chlorine, 24 months. 7037-G pH liquid reagent for pH, 24 months 7038-G ALK liquid reagent for total alkalinity, 6 months 7042-G CH1 liquid reagent for calcium hardness, 12 months 7041-G CH2 liquid reagent for calcium hardness, 6 months 6996A-J CYA Cyanuric Acid TesTabs Tablet Reagent, 24 months.LaMotte 7041-G CH2 liquid reagent for calcium hardness, 30 ml - 7041G for Color Q 2056, New *** Check out more Lamotte Products (Click Here) Maximum shelf life for LaMotte Reagents from production date: P-6740-G DPD 1A liquid reagent for free chlorine, 24 months. P-6741-G DPD 1B liquid reagent for free chlorine, 12 months. P-6743-G DPD 3 liquid reagent for total chlorine, 24 months. 7037-G pH liquid reagent for pH, 24 months 7038-G ALK liquid reagent for total alkalinity, 6 months 7042-G CH1 liquid reagent for calcium hardness, 12 months 7041-G CH2 liquid reagent for calcium hardness, 6 months 6996A-J CYA Cyanuric Acid TesTabs Tablet Reagent, 24 months.