Check the listing for details. AquaLabs pH Aquarium Test Kit Freshwater Saltwater Testing Kit. Condition: New. Listed at 20.73 USD. The AquaLabs pH Test Kit provides accurate, easy-to-interpret measurements of your aquarium’s acidity and alkalinity, helping you maintain a stable environment for the health of fish, corals, and plants. Using a high-precision liquid reagent, this kit delivers clear, consistent colour results across two tailored testing ranges: Saltwater pH Range: 7.4 – 8.4 Freshwater pH Range: 6.4 – 8.8 Each kit contains enough reagent solution for 300 individual tests , making it a long-lasting and cost-effective tool for routine monitoring. Kit Includes: • High-accuracy liquid pH reagent • 5 mL glass test tube with cap • Dual colour charts for freshwater and saltwater interpretation • Clear, step-by-step instructions Designed for both new and established.