Description

pH Calibration Buffer Powder Sachets – 4.01 / 6.86 / 9.18 (25 °C)

Keep your pH meter accurate and reliable with these pH Calibration Buffer Powder Sachets, available in pH 4.01, pH 6.86, and pH 9.18 values. Designed for quick, precise calibration of digital and pen-type pH meters, these powders ensure consistent readings across all water-testing applications — from aquariums and aquaculture systems to hydroponics, pools, and laboratory use.

Professional-Grade Accuracy You Can Trust

Every pH meter, no matter the brand or model, requires routine calibration to stay accurate. Over time, electrodes naturally drift due to temperature, water chemistry, or storage conditions. Using these standard calibration buffers allows your device to realign its internal reference points, restoring confidence in every test result.

Each sachet is formulated to international standards and designed to produce stable, reproducible readings at 25 °C, ensuring compatibility with all major digital pH testers, including portable pen meters, bench-top testers, and combo probes.

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Three Essential Calibration Points

1. pH 4.01 Buffer Powder (Acidic Range)
Ideal for calibrating the low end of the pH scale, the pH 4.01 solution simulates mildly acidic conditions found in soft freshwater, food samples, or chemical applications. This buffer is essential when testing acidic environments such as plant nutrient solutions, beverages, or soft-water aquariums.

2. pH 6.86 Buffer Powder (Neutral Reference)
The pH 6.86 buffer is the central calibration point used by most meters as a reference for neutral water conditions. Perfect for aquariums, aquaculture systems, and drinking-water testing, this buffer ensures your readings are accurate near the typical pH of tap or freshwater sources.

3. pH 9.18 Buffer Powder (Alkaline Range)
For higher-pH environments, the pH 9.18 buffer provides a stable reference in the alkaline range. It’s particularly useful for calibrating devices used in saltwater aquariums, reef systems, or alkaline-treated water where pH levels commonly exceed 8.0.

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Easy to Prepare and Use

Each sachet contains a precisely measured quantity of high-purity buffer powder. To prepare:

1. Empty the contents of one sachet into a clean container.

2. Add 250 ml of distilled or deionized water (at 25 °C).

3. Stir gently until the powder is fully dissolved.

4. Use the freshly prepared buffer to calibrate your pH meter following the manufacturer’s instructions.

Once mixed, the solution remains stable for several days if stored in a sealed container away from direct sunlight and contamination.

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Features & Benefits

• Accurate three-point calibration: Calibrate at 4.01, 6.86, and 9.18 pH for full-range accuracy.

• Stable and precise at 25 °C: Each sachet is temperature-compensated for standard lab and field conditions.

• Compatible with all pH meters: Works with handheld, portable, and benchtop digital pH testers.

• Convenient single-use packaging: Pre-measured sachets prevent contamination and ensure consistent concentration.

• Cost-effective and long-lasting: Store sachets dry until needed for maximum shelf life.

• Essential for aquarists: Keep aquarium and reef system readings reliable for coral, fish, and invertebrate health.

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Ideal Applications

• Aquariums & Aquaculture: Maintain stable pH for marine and freshwater systems.

• Hydroponics & Gardening: Ensure nutrient solutions stay within the correct range for plant uptake.

• Food & Beverage Testing: Calibrate instruments used in acidity measurement for brewing, dairy, or canning.

• Laboratory & Education: Perfect for classroom or field experiments where accuracy matters.

• Water Treatment & Pools: Guarantee consistent testing for water safety and balance.

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Storage & Handling

Keep the pH Calibration Buffer Powder Sachets buffer powders sealed in their original packaging until ready to use. Store in a cool, dry place away from humidity. Avoid touching the powder directly, as skin oils and moisture can affect precision. After mixing, discard used buffer solutions and always prepare fresh solutions for future calibrations.

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Product Summary

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Final Thoughts

Accurate calibration is the foundation of reliable water testing. The pH Calibration Buffer Powder Set provides a complete, cost-effective solution for keeping your pH meters precise and trustworthy. With easy preparation, three essential calibration points, and broad compatibility, these sachets make maintaining accuracy simple — whether you’re fine-tuning a reef tank, testing tap water, or preparing laboratory samples.

Keep your readings true and your water balanced with the trusted reliability of the pH Calibration Buffer Powders.

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