Aqua Master Tools Calibration Solution pH 7.00 - 500 ml - 8 Count

Dependable pH 7.00 Calibration for Hydroponic Meters - 8 Bottles

Drifting pH readings lead to wrong nutrient adjustments and stressed plants. This pH 7.00 calibration solution gives your meter a known reference point so you can correct drift before it affects your reservoir. The solution is traceable to a NIST standard, so your calibration rests on a documented reference.

Each unit contains 8 bottles of 500 ml. That volume suits growers who calibrate often, such as regular indoor growers running several reservoirs, and commercial operations that share meters across rooms or staff. A single unit keeps a full set of spare bottles on the shelf.

Key Features & Benefits

• pH 7.00 reference value — gives you a neutral calibration point for your meter.
• NIST-traceable — ties your calibration to a recognised standard.
• 500 ml bottles — hold enough solution for many calibrations.
• 8 bottles per unit — keeps you stocked for repeated use.
• Room-temperature storage — store between 15-25 °C, with no special equipment needed.

Who Should Use Aqua Master Tools Calibration Solution pH 7.00

Anyone who measures pH in nutrient solution: home gardeners with a single reservoir, and licensed commercial growers who calibrate meters on a routine schedule. It suits high-frequency users who want several bottles on hand.

About Aqua Master Tools Calibration Solution pH 7.00

Aqua Master Tools makes meters and measurement supplies for hydroponics. This product is a 500 ml pH 7.00 calibration solution, traceable to a NIST standard. Each unit contains 8 bottles and ships at 10.8 lb in a package measuring 13 x 13 x 13 in.

Frequently Asked Questions

Q: What is a calibration solution?
A: A calibration solution is a liquid with a known, fixed pH. You place your meter probe in it and adjust the meter until it reads that value, which corrects drift.

Q: How many bottles do I receive?
A: Each unit contains 8 bottles, and each bottle holds 500 ml. You order one unit to receive all 8.

Q: How should I store the bottles?
A: Keep them between 15-25 °C and close each bottle immediately after use. This limits contamination and exposure to air.

Q: Can I pour used solution back into the bottle?
A: No. Do not return liquid to the bottle. Pour a small amount into a separate container for calibration and discard it afterward so the stock stays clean.

Q: What does NIST-traceable mean?
A: It means the solution's value can be linked back to a reference standard from the US National Institute of Standards and Technology. This supports consistent, documented calibration.