https://www.poolwaterlab.us/ daily https://www.poolwaterlab.us/products/water-testing-professional-water-testing-advanced-multi-spectral 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLab 2.0 Photometer - Professional Water Testing PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/total-hardness-liquid-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/total-hardness-liquid-reagents-two-bottles-poolwaterlab.jpg?v=1770221481 Total Hardness Liquid Reagents – Kit to Measure (50 Tests) Total hardness liquid reagent bottles for water hardness testing. https://www.poolwaterlab.us/products/calcium-hardness-liquid-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/calcium-hardness-liquid-reagents-two-bottles-poolwaterlab.jpg?v=1770221572 Calcium Hardness Liquid Reagents Calcium hardness liquid reagent bottles for pool water testing. https://www.poolwaterlab.us/products/refill-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-free-chlorine-reagent-tablets-50-back-label.webp?v=1771185525 Refill Tablets – Replacement Reagent Kit (70 Tablets) PoolWaterLAB Free Chlorine reagent tablets (50) for pool photometer testing, compatible photometer test setup https://www.poolwaterlab.us/products/replacement-cuvette-pool-water-testing-machine-pool-water-tester 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/products/lighting-tire-system-replacement-cuvette-for-poollab-1-0-pool-water-tester-277.jpg?v=1668682100 Replacement Cuvette for PoolLab 1.0 ( POLsp–kv ) PoolLab 1.0 Replacement Cuvette - Pool Lab https://www.poolwaterlab.us/products/ph-liquid-reagent 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/phenol-red-liquid-reagent-bottle-poolwaterlab.jpg?v=1770221031 Phenol Red Liquid Reagents – for pH Testing (250 Tests) Phenol Red liquid reagent bottle for pH testing in pools and hot tubs. https://www.poolwaterlab.us/products/free-chlorine-liquid-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/dpd-1a-dpd-1b-liquid-reagents-two-bottles-poolwaterlab.jpg?v=1770221336 DPD 1A + DPD 1B Liquid Reagents – for Testing Free Chlorine (250 Tests) DPD 1A and DPD 1B liquid reagent bottles for free chlorine testing. https://www.poolwaterlab.us/products/total-chlorine-liquid-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/dpd-3c-liquid-reagent-bottle-poolwaterlab.jpg?v=1770220899 DPD 3C Liquid Reagents – for Testing Total Chlorine (250 Tests) DPD 3C liquid reagent bottle for combined chlorine testing. https://www.poolwaterlab.us/products/pool-lab-reference-kit-pool-water-testing-machine-pool-water-tester 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/pool-water-tester-reference-kit-for-pool-lab-1-0-polsp-rsk-f-817.webp?v=1717421415 Reference-kit for PoolLab 1.0 ( POLsp–RSK–f ) PoolLab-Accessories: Reference-kit - PoolLab USA https://www.poolwaterlab.us/products/phmb-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/phmb-biguanide-reagent-tablets-50-photometer.jpg?v=1769547641 PHMB Reagent Tablets (50) – for Pool Photometers PHMB biguanide reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/pool-hot-tub-digital-water-tester 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-photometer-v2-0-digital-pool-hot-tub-tester-hero-01.webp?v=1770571643 PoolWaterLAB Photometer V2.0 PoolWaterLAB Photometer V2.0 digital pool and hot tub water tester https://www.poolwaterlab.us/products/ph-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Ph.jpg?v=1770403050 Phenol Red Reagent Tablets (50) – pH Test for Pool Photometers Box of Phenol Red Photometer/Comparator with WaterLab branding on a white background https://www.poolwaterlab.us/products/hydrogen-peroxide-low-range-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/hydrogen-peroxide-low-range-reagent-tablets-50-photometer.jpg?v=1769607162 HYD Peroxide LR Reagents Tablets (Low Range) (50) – for Pool Photometers Low-range hydrogen peroxide reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/hydrogen-peroxide-high-range-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/hydrogen-peroxide-high-range-reagent-tablets-50-photometer_4df4a1eb-7148-40e1-aaab-88b051cb7be3.jpg?v=1769607052 HYD Peroxide HR Reagent Tablets (High Range) (50) – for Pool Photometers High-range hydrogen peroxide reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/chlorine-dioxide-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-free-chlorine-reagent-tablets-50-front_bc6a5629-ca4e-4295-9444-8f46e2e2778a.jpg?v=1769547164 Glycine Reagents Tablets (Glycine) (50) – for Pool Photometers Chlorine dioxide test tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/active-oxygen-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-free-chlorine-reagent-tablets-50-front_6e05cda1-ea30-451d-87b0-183bd4ce3d8d.jpg?v=1769547352 DPD N°4 Reagents Tablets (50) – for Pool Photometers Active oxygen reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/cyanuric-acid-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-free-chlorine-reagent-tablets-50-front_5f7cdbdd-9dec-409a-9f8b-9b7759ee04d0.jpg?v=1769540316 CYA-Test Reagent Tablets (50) – Stabilizer Test for Pool Photometers PoolWaterLAB Cyanuric Acid (CYA) reagent tablets (50) for pool photometer testing, front of pack https://www.poolwaterlab.us/products/total-alkalinity-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-free-chlorine-reagent-tablets-50-front_d401e566-6076-499a-8566-6bc867ae5983.jpg?v=1769537582 Alkalinity-M Reagent Tablets (50) – for Pool Photometers PoolWaterLAB Total Alkalinity reagent tablets (50) for pool photometer testing, front of pack https://www.poolwaterlab.us/products/total-chlorine-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-free-chlorine-reagent-tablets-50-front_3f62b5c4-0ded-42ce-ad3a-072524197adc.jpg?v=1769538047 DPD3 Reagent Tablets (50) – for Pool Photometers https://www.poolwaterlab.us/products/free-chlorine-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-free-chlorine-reagent-tablets-50-front.jpg?v=1769535640 DPD1 Reagent Tablets (50) – for Pool Photometers PoolWaterLAB Free Chlorine reagent tablets (50) for pool photometer testing, front of pack https://www.poolwaterlab.us/products/acidifying-pt-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/acidifying-pt-reagent-tablets-50-photometer.jpg?v=1769548373 Acidifying PT Reagent Tablets (50) – for Pool Photometers https://www.poolwaterlab.us/products/aluminum-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/aluminium.webp?v=1770573446 Aluminum N° 1 + N° 2 Reagent Tablets (50) – for Pool Photometers https://www.poolwaterlab.us/products/ammonia-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Ammonia Reagents – N°1 + N°2 (100 Powder Pillows) Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/acidifying-gp-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Acidifying GP Reagents – 50 Powder Pillows Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/chlorine-hr-ki-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Chlorine HR KI Reagents – 50 Powder Pillows Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/copper-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/copper-reagent-tablets-100-photometer.webp?v=1770574607 Copper Reagents – N°1 + N°2 Tablets (100) – Copper Test for Pool Photometers Copper reagent tablets for pool photometer — 100 count https://www.poolwaterlab.us/products/copper-zinc-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/copper-zinc-reagent-tablets-50-photometer.jpg?v=1769549275 Copper Zinc LR Reagent Tablets (50) – for Pool Photometers Copper & zinc reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/hydrogen-peroxide-powder-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Hydrogen Peroxide HR Reagents – 50 Powder Pillows Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/iron-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/iron-reagent-tablets-50-photometer.jpg?v=1769549826 Iron LR Reagent Tablets (50) – for Pool Photometers Iron reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/nitrate-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Nitrate Reagents – N°1 + N°2 (100 Powder Pillows) Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/phosphate-hr-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Phosphate HR Reagents – N°1 + N°2 Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/phosphate-lr-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Phosphate LR Reagents – N°1 (50 Powder Pillows) + N°2 (50 Tablets) Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/potassium-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/potassium-reagent-tablets-50-photometer..jpg?v=1769606711 Potassium Reagent Tablets (50) – for Pool Photometers Potassium reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/sulfate-reagent 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Sulphate Reagents – 50 Powder Pillows Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/urea-liquid-reagent 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Urea.webp?v=1770573161 Urea Land 2 Reagents Liquid https://www.poolwaterlab.us/products/combined-chlorine-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/combined-chlorine-reagent-tablets-50-photometer.jpg?v=1769550124 DPD No. 2 Reagent Tablets (50) – Combined Chlorine (Chloramines) for Pool Photometers Combined chlorine (chloramines) reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/edta-test-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/zinc-reagent-tablets-50-photometer.jpg?v=1769550452 EDTA Reagent Tablets (50) – for Pool Photometers Zinc reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/filter-papers-pool-water-testing-machine-pool-water-tester-digital 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/17.webp?v=1770573995 GF/C Filter Papers for Phosphate HR & Nitrate https://www.poolwaterlab.us/products/adapter-for-filter-papers 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/18.webp?v=1770573966 Filter Paper Adapter for Phosphate HR & Nitrate https://www.poolwaterlab.us/products/phosphate-ht-syringe-20ml-luer-lock 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/pool-water-tester-20ml-luer-lock-syringe-for-filter-ad-285.webp?v=1719750176 20 mL Luer Lock Syringe for Phosphate HR & Nitrate (Filter Adapter System) Luer Lock Syringe - 20ml Precision Liquid Handling https://www.poolwaterlab.us/products/nitrate-test-shaker-25ml 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/14.webp?v=1770573941 Nitrate Test Shaker (25 mL) for PoolWaterLAB / PoolLab 2.0 https://www.poolwaterlab.us/products/photometer-check-standards 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/16-10-23-2-26-pphr-zero-liquid-check-standard-kit-3-pol2sp-kv-with-standards-for-chlorine-373.jpg?v=1686244076 Photometer Check Standards Kit (PoolWaterLAB / PoolLab 2.0) Check-Standard kit (3 × POL2Sp-kv) with check standards for https://www.poolwaterlab.us/products/replacement-cuvette-poolwaterlab-poollab-2 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-3-cell-test-cuvette-front.webp?v=1770572806 Replacement Cuvette (POL2Sp-kv) for PoolWaterLAB / PoolLab 2.0 PoolWaterLAB 3-cell test cuvette for pool water testing, front view https://www.poolwaterlab.us/products/replacement-light-shield-photometer 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-case-insert-lid-1-2-3-front.webp?v=1770572806 Replacement Light Shield for PoolWaterLAB / PoolLab 2.0 Photometer PoolWaterLAB case insert lid with numbered covers 1 2 3, angled view https://www.poolwaterlab.us/products/replacement-cuvette-holder-photometer 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/poolwaterlab-case-frame-holder-side-angle.webp?v=1770572806 Replacement Cuvette Holder for PoolWaterLAB / PoolLab 2.0 PoolWaterLAB case frame holder for photometer, side angle view https://www.poolwaterlab.us/products/stirring-stick 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/pool-water-tester-red-10-5-cm-plastic-stirring-stick-5-unit-102.webp?v=1715944278 Plastic Stirring Stick for Pool & Spa Water Testing Poolwaterlab - Red 10.5 Cm Plastic Stirring Rod 5 Unit https://www.poolwaterlab.us/products/dechlor-reagent-tablets 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/dechlor-reagent-tablets-50-photometer.jpg?v=1769550717 DECHLOR Reagents – 50 Tablets for Poollab 2.0 & PoolWaterLAB DECHLOR reagent tablets for pool photometer — 50 count https://www.poolwaterlab.us/products/nitrite-lr-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/Pool_Mineral_Balance_Pool_Tester_Tablets_Digital_Water_Analysis.webp?v=1770574403 Nitrite LR Reagents – 50 Powder Pillows Reagents for Pool LAB - PoolWaterLAB - Water Tester - https://www.poolwaterlab.us/products/black-hard-case-black-hard-hard-case-pool-water-testing-machine-pool 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/pool-water-tester-black-hard-case-with-zip-and-matching-foam-insert-585.webp?v=1715257218 Black hard case with zip and matching foam insert for PoolWaterLAB Black Hard Case With Zip And Matching Foam Insert https://www.poolwaterlab.us/products/photometer-approved-rechargeable-aa-kit 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/pool-water-testing-machine-pool-water-tester-digital-pool-water-845.webp?v=1722012200 Approved Rechargeable AA Battery Kit for PoolWaterLAB Photometer Rechargeable Batteries Aa 3 Pieces With Charging Cable For Poolwaterlab, Watertester https://www.poolwaterlab.us/products/touch-display-multiple-wavelengths-parameters-methods-pool-water 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - COD KIT (Chemical Oxygen Demand) PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/touch-display-multiple-wavelengths-parameters-methods-boiler-water 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - Boiler Water KIT PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/touch-display-multiple-wavelengths-parameters-methods-cooling-water 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - Cooling Water KIT PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/touch-display-multiple-wavelengths-parameters-methods-drinking-water 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - Drinking Water KIT PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/primelab-2-0-photometer-for-professional-testing-pool-kit-pro 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - Pool Kit Pro PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/primelab-2-0-pool-kit-standard 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - Pool Kit Standart PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/touch-display-multiple-wavelengths-parameters-methods-waste-water 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - Waste Water KIT PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/primelab-2-0-photometer-for-professional-testing-pool-kit-standart-2 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - Pool Kit Standart 2 PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/primelab-2-0-photometer-for-professional-testing-pool-kit-pro-2 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/primelab-photometer-front-view.jpg?v=1770570469 PrimeLAB 2.0 - Pool Kit Pro 2 PrimeLAB digital photometer held in hand for pool and spa water testing https://www.poolwaterlab.us/products/photometer-water-leveler-10ml 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/water-leveler-pool-water-testing-machine-pool-water-tester-black-298.webp?v=1746799213 Water Leveler (10 mL Overflow Tool) for PoolWaterLAB / PoolLab 2.0 Black stacked rectangular blocks. https://www.poolwaterlab.us/products/alkalinity-liquid-reagents 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/alkalinity-liquid-reagent-bottle-poolwaterlab.jpg?v=1770221214 Alkalinity Liquid Reagents Alka-M – 110 Tests Alkalinity liquid reagent bottle for total alkalinity testing in pools. https://www.poolwaterlab.us/products/battery-compartment-cover-for-pool-water-tester-version-2-0 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/5_68e8a9ba-a4e1-4fa4-a66f-d8f7270b8a77.webp?v=1770574926 Battery compartment cover for PoolWaterLAB https://www.poolwaterlab.us/products/probebox-1-0-accessory-kit-for-primelab-2-0 2026-04-16T00:52:41-05:00 daily https://cdn.shopify.com/s/files/1/0549/9525/5479/files/5.jpg?v=1768902204 ProbeBOX 1.0 Accessory Kit (for PrimeLab 2.0)