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  • Milwaukee M10007 pH 7.01 calibration buffer solution, single-use 20 mL aquarium sachet
  • Milwaukee M10010 pH 10.01 calibration buffer solution, single-use 20 mL aquarium sachet
  • Sku: M10007
  • Vendor: Hydros

Milwaukee pH Calibration Solution

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Level: 7.01 pH

Product description

Keep your pH readings honest. Milwaukee pH Calibration Solution comes in single-use 20 mL sachets of pH 7.01 and pH 10.01 buffer, the two reference points most aquarium pH probes and pens use for an accurate two-point calibration. A drifting probe is the most common reason a tank "reads fine" while parameters quietly slip, so fresh, sealed buffer is cheap insurance for any reef or planted tank running a pH controller or monitor. Pairs perfectly with the gear in our water testing collection.

Single-use sachets, not an open bottle. Each foil sachet is sealed and used once, so the buffer never sits open absorbing CO2 or getting contaminated. That is the difference between a calibration you can trust and one that drifts the moment the bottle is cracked.

How Two-Point Calibration Works

A pH probe is calibrated against known reference values. You dip the rinsed probe in pH 7.01 to set the neutral point, then in pH 10.01 (or pH 4.01) to set the slope. Tear a sachet, calibrate, and discard. For reef and high-alkalinity tanks the 7.01 and 10.01 pair brackets your real-world readings best; freshwater and planted keepers running CO2 can use 7.01 with a 4.01 buffer if their water trends acidic.

Features

Two buffer valuespH 7.01 and pH 10.01 sold separately so you buy only what your routine needs.
20 mL single-use sachetSealed, one-shot pour. No open bottle to oxidize or contaminate.
Accurate referenceColor-coded, value-stamped buffer for repeatable, reliable calibration.
Universal fitWorks with Hydros, Apex, Milwaukee, and virtually any pH probe or handheld pen.
Fresh and datedIndividually packaged buffer stays accurate far longer than a half-used jug.
Fresh or salt waterThe same buffers calibrate probes on reef, fish-only, and planted systems alike.

Choose Your Buffer

Spec pH 7.01 pH 10.01
Calibration point Neutral / zero point High / slope point
Use it for Every calibration (the baseline) Reef & alkaline tanks (slope)
Volume 20 mL single-use 20 mL single-use
SKU M10007 M10010

For a standard two-point calibration on a reef or marine tank, grab one of each. Most controllers walk you through 7.01 first, then 10.01.

Specifications

Specification Detail
Product pH calibration buffer solution
Buffer values pH 7.01 and pH 10.01 (sold separately)
Volume per sachet 20 mL, single use
Compatibility Aquarium pH probes, controllers, and handheld pens
Water type Freshwater and saltwater
Brand Milwaukee Instruments

Recommended Pairings

FAQ

How often should I calibrate my pH probe?
Most hobbyists calibrate every 1 to 2 months, and any time a reading looks off. Probes drift gradually, so a quick recalibration keeps your controller dosing and alarms trustworthy.

Do I need both 7.01 and 10.01?
For a two-point calibration, yes. The 7.01 sets the baseline and the second buffer sets the slope. Reef and alkaline tanks pair 7.01 with 10.01; acidic or CO2-injected planted tanks may prefer 7.01 with a 4.01 buffer.

Why single-use sachets instead of a bottle?
Buffer solution changes value once it is exposed to air. A sealed sachet you open once gives a far more accurate calibration than buffer from a bottle that has been opened repeatedly.

Will these work with my brand of probe?
Yes. pH 7.01 and 10.01 are standard reference values, so they calibrate Hydros, Apex, Milwaukee, and essentially any aquarium or handheld pH meter.

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Milwaukee pH Calibration Solution

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