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Milwaukee Instruments

Milwaukee pH Calibration Fluid - Single Use Packet

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Grouped product items
10.01 Calibration Solution Single Use Packet - Milwaukee

SKU: 205457

In stock

$1.59 $1.59

- +
7.01 Calibration Solution Single Use Packet - Milwaukee

SKU: 205458

In stock

$1.59 $1.59

- +
4.01 Calibration Solution Single Use Packet - Milwaukee

SKU: 205460

In stock

$1.59 $1.59

- +
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Details

Milwaukee Calibration Solution sold in single use packets are great for calibrating your pH probe or pen. Many pH probes will start to loose their calibration in as short as a month or two depending on your probe. We suggest calibrating probes every 30-60 days for the most reliable readings.

Available in:

4.01 pH

7.01 pH

10.01 pH

 

Compatible with all pH meters and probes.

 

Milwaukee Calibration Solution sold in single use packets.

 

Almost all pH monitors and controllers will require two points of reference to accurately monitor the pH that the probe is reading. You will want to use calibration solutions that are on either spectrum of the pH you intend to monitor. For reef tanks where the pH is normally 7.8-8.5 then you would want to use calibration solution 7.0 and 10.01. For calcium reactors on saltwater tanks where the pH is normally below 7.0, you would want to use 4.01 and 7.01 for calibration of the probe.

 

4.01 pH - The lower threshold reading your pH monitor or controller will require for use with calcium reactors for saltwater aquariums, solutions below 7.00 pH and also most freshwater aquariums.

 

7.01 pH - Neutral pH calibration packet. This is used by almost all pH monitors and controllers for calibration. 

 

10.01 pH - The higher threshold reading your pH monitor or controller will require for use with saltwater aquariums or solutions above 7.00 pH

 

Calibration packets can be stored in a cool dry area for up to 2 years.

More Information
More Information
SKU Milwaukee pH Calibration Fluid - Single Use Packet
Aquarium Type Saltwater, Freshwater
Reviews 36
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Product Questions

Product Questions

Hi, does the solution loses accuracy if sitting on a shelf for to long? in other words, what the shelf life on this item before it's not good to use
Question by: Mitch Dominguez on Jun 4, 2025, 9:03 AM
These solutions usually have a 2-year shelf life when stored in a cool, dry area out of direct sunlight!
Answer by: Taylor L. (BRS Staff) on Jun 20, 2025, 2:54 PM
what PH Calibration Solution should I use for my digital aquatics PH probe
Question by: Dylan on Jun 14, 2014, 1:52 PM
Hi Dylan,
pH calibration requires two calibration solutions. You want to use the two solutions closest to the pH of what you are measuring. If your planning to measure the pH of your aquarium which is usually around 8, you would use the 7 and 10 solutions. If measuring the pH of something like a calcium reactor which is usually closer to 6-7, you would want to use the pH 4 and 7 solutions.
Answer by: Bulk Reef Supply on Jun 14, 2014, 1:52 PM

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