Calcium Hardness Liquid Reagents

Calcium Hardness Liquid Reagents – Kit to Measure – 50 Tests are photometer-compatible replacement / refill consumable liquid reagents used for accurate pool & spa testing.

Key Specs

• Product type: Replacement / refill reagent (consumable)
• Test parameter: Calcium hardness
• Format: Liquid reagent kit (50 tests)
• Shelf life: 6 months (from the date you receive it)

What this reagent does

Basically dissolved salts belonging to the alkaline earth elements calcium and magnesium are found in non-distilled water. In rare cases, strontium and barium can also be found. These combine with carbonate ions to form water- insoluble compounds (calcium). Through the total hardness measurement, the potential danger of calcium precipitation is measured as the required carbonate ions form from hydrogen carbonate ions when water heats up or when there are pH values that are greater than 8.2 (comp. Alkalinity). When measuring calcium hardness (SVZ1300 tablet process), only the part of the dissolved calcium in water is measured. The amount of magnesium dissolved in water is determined from the difference between the measurement and the total hardness.

Storage & shelf life

Store reagents cool, dry, and sealed. Avoid humidity and heat.

• Recommended storage temperature: 59-77°F (15-25°C)
• Protect from: moisture/water and direct heat

Proper storage helps maintain accuracy and supports the stated shelf life.

Material Safety Data Sheet (MSDS) — Download

Note: Product performance depends on correct testing procedure and proper reagent storage.