R-0012-A | Taylor Hardness Reagent | 0.75 oz.

The Taylor R-0012-A Hardness Reagent (0.75 oz) is a precision-formulated drop-bottle used in compatible Taylor pool and spa test kits to measure calcium hardness levels. Designed to work in conjunction with reagents R-0010 and R-0011L, this reagent triggers the final color change step, allowing you to calculate water hardness accurately. Proper hardness testing protects pool surfaces, equipment and water balance—ensuring safer, clearer water and helping you avoid corrosion or scaling issues.

Highlights

• Accurate Hardness Testing: Enables reliable measurement of calcium hardness when used with Taylor test kits, helping safeguard pool surfaces and equipment.

• 0.75 oz Dropper Format: Compact size ideal for refills, ensuring you have the correct volume for your testing routine without over-stocking.

• Kit Compatibility: Designed specifically to replace reagent R-0012 in Taylor’s hardness testing system and integrates seamlessly with the established test protocol.

• Protects Pool Integrity: By accurately measuring hardness, you can prevent scaling, corrosion, and maintain proper water chemistry for longer equipment life.

• Annual Maintenance Tip: Taylor recommends replacing reagents each year to maintain accuracy and minimize drift in test results.

Additional Info

If you’re restocking your Taylor water test kit, the Taylor R-0012-A Hardness Reagent (0.75 oz) is the small but vital component that measures calcium hardness. This section explains how to confirm compatibility, understand how it interacts with R-0010 and R-0011L, and ensure proper use before you buy in store.

How the Taylor R-0012-A Works in Hardness Testing

This reagent is the final titrant step in the calcium hardness test. When used with Taylor reagents R-0010 and R-0011L, it produces a clear color change that reveals the hardness level in your pool or spa water.

How many drops of R-0012-A are needed to complete a hardness test

Can I buy the R-0012-A reagent in store for same-day water testing

Does this reagent work with my existing Taylor kit that uses R-0010 and R-0011L

What color change should I expect when the hardness test is complete

Can I bring my Taylor kit to the store to match the correct reagent size

Proper Handling and Storage Tips

Even though it’s a small bottle, R-0012-A should be kept upright in a cool, shaded location. Reagents lose accuracy if exposed to heat or direct sunlight, so store it with your test kit in a clean, dry place.

How long does a 0.75 oz bottle of R-0012-A last during regular pool testing

What’s the best temperature range to store Taylor reagents safely

Is it safe to store R-0012-A near chlorine tablets or acid bottles

How to handle accidental contact or spills while testing water hardness

Does Discount Pool Mart carry protective accessories for handling reagents

Improving Water Balance Accuracy

Accurate calcium hardness readings help prevent damage to plaster, heaters, and metal fittings. Testing regularly ensures proper balance, clearer water, and long-lasting equipment performance.

How often should I test calcium hardness in a standard residential pool

How to adjust water hardness levels based on my Taylor test results

Can I purchase all three reagents R-0010, R-0011L, and R-0012-A in store together

What hardness range should I maintain to protect tile and surfaces

How to interpret the color change endpoint for best accuracy