Alkalinity Refill Reagents

Complete replacement reagent set for the Benchmark Alkalinity Test Kit. Reuse your existing sample vial, syringes and testing stand.

Included

• 118 mL of 0.0179 N Alkalinity Titrant
• 7.5 mL Alkalinity Indicator

Designed for a 5.00 mL aquarium-water sample with a blue-to-red endpoint. Calculate alkalinity as dKH = mL titrant used × 10. Provides approximately 100 tests at typical reef-aquarium alkalinity levels.

Best refill value: Save $3.99 compared with purchasing the Indicator and Titrant separately.

Need the vial, syringes and stand too? Choose the complete Alkalinity Test Kit.

For aquarium testing only. Keep out of reach of children and read all product labels and safety information before use.