PH 4.0 calibration solution. Designed for Bluelab products but can be used for any PH meter.
Using alongside Bluelab 7.0 solution is recommended for more accurate calibration.
How to calibrate your Bluelab pH products
If you want to improve your Bluelab pH product’s accuracy and longevity, you’ll need to get into the habit of regular cleaning and calibration. Luckily, the easy-to-follow calibration process is the same for all Bluelab pH probes and pens.
After cleaning your pH probe, you’ll need to calibrate it with pH calibration solutions at two reference standards – 4.0 and 7.0 pH. Once calibrated, you can start measuring pH again immediately. You’ll need to recalibrate whenever you clean your pH probe and when your meter alerts you that a calibration is needed.
| Size | 250ml, 500ml |
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Fast Shipping with Professional Packaging
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Note that orders containing multiple items are processed according to the particular item.
Before shipping, all ordered products will be thoroughly inspected. The majority of orders today are shipped in 48 hours. It is expected that delivery will take between 3 and 7 days.
Returns
The stock is constantly changing. It's not completely managed by us, as we have multiple organizations, such as the factory and our storage. The actual stock can be changed at any time. It is possible that your order is out of stock when the order has been placed.
Our policy runs for 30 days. If it's been longer than 30 days since the date you purchased your item and we're unable to offer you a complete exchange or refund.
The item must not be in use and must be in the original packaging. You must have the item in the original packaging.
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