Bluelab Solution Sachet 30 box - pH 4.0 Calibration Solution

Fresh pH 4.0 for Every Calibration, 30 Single-Use Sachets

Bottled solution gets contaminated as it is opened and reused, and partial bottles get forgotten. Single-use sachets give a fresh, measured 18 ml dose every time and tear open for on-the-go calibration and probe storage. This box holds 30 sachets.

The 30-sachet box suits regular home use and commercial teams who calibrate often, and works well as a counter display that reminds growers to calibrate.

Key Features & Benefits

• 30 single-use sachets — 18 ml / 0.6 fl oz each.
• Contents — single-use Bluelab pH 4.0 Calibration Solution.
• Quick tear-open — sized for on-the-go calibration and probe storage.
• Compatible use — for calibrating Bluelab pH Pens, Soil pH Pens, pH Probes and Leap pH Probes.

Who Should Use these sachets

Growers who calibrate regularly and prefer fresh, uncontaminated solution for every check, and retailers who stock sachets at the counter.

About Bluelab pH 4.0 Sachet Box

Bluelab offers single-use sachets in pH 4.0, pH 7.0, 2.77 EC, KCl storage and a mixed box. Each box contains 30 sachets of 18 ml / 0.6 fl oz.

Frequently Asked Questions

Why use single-use sachets instead of bottles?

Each sachet is a fresh, sealed dose, so there is no risk of contaminating a whole bottle. They are also easy to carry for calibration away from your bench.

How much is in each sachet?

Each sachet holds 18 ml / 0.6 fl oz, enough for one calibration point or one storage cap refill.

Which devices are they for?

For calibrating Bluelab pH Pens, Soil pH Pens, pH Probes and Leap pH Probes.

How often should I calibrate?

Many Bluelab pH meters show a 30-day calibration reminder. Check EC probes with 2.77 EC standard whenever readings seem off and after cleaning.