Bluelab pH 7.0 Calibration Solution – 18 ml Single-Use Sachet
The essential neutral reference point for accurate, reliable pH calibration. The Bluelab pH 7.0 Calibration Solution sachet provides a certified neutral buffer for calibrating any pH meter, pen, monitor, or controller. Used as the primary calibration point in both two-point and three-point routines, pH 7.0 is the cornerstone of every accurate pH measurement.
Whether you're dialing in nutrient solution pH in your grow room, verifying water quality in the lab, or maintaining aquarium chemistry — a fresh, uncontaminated pH 7.0 sachet gives you the confidence that your readings are spot-on before you even dip your probe.
Key Features
- ✅ Precise pH 7.0 neutral buffer — certified reference point for accurate single-, two-, or three-point calibration
- ✅ Single-use 18 ml / 0.6 fl oz sachets — eliminates cross-contamination between calibrations
- ✅ Easy tear-open design — no scissors needed; calibrate anywhere in seconds
- ✅ Portable sachet format — perfectly sized for on-the-go and field calibration
- ✅ Compatible with all Bluelab pH meters, monitors, and pens — and any standard pH probe
- ✅ Made in New Zealand — Bluelab quality assurance
Technical Specifications
| Brand |
Bluelab |
| Solution Type |
pH Calibration Buffer |
| pH Value |
7.0 (neutral reference point) |
| Volume per Sachet |
18 ml / 0.6 fl oz |
| Format |
Single-use tear-open sachet |
| SKU |
PH718B-1 |
| Barcode |
9421024921477 |
| Country of Origin |
New Zealand |
When to Use pH 7.0 Buffer
pH 7.0 is the neutral calibration point and the most commonly used buffer in pH calibration. It is the required reference in single-point calibration and the midpoint in two-point (pH 4.0 + 7.0) and three-point (pH 4.0 + 7.0 + 10.0) calibration routines. Always calibrate with fresh solution for best accuracy — never reuse sachets.
Ideal Applications
- Hydroponics and indoor growing — nutrient solution pH management
- Aquariums and aquaculture — water quality monitoring
- Laboratories and educational institutions
- Environmental and field water testing
- Food and beverage quality control
Compatible With
Works with all Bluelab pH meters, pens, monitors, and controllers, as well as any third-party pH probe or meter requiring a pH 7.0 calibration buffer.
Complete Your Calibration Kit
For two-point calibration, pair with the Bluelab pH 4.0 Calibration Solution sachet. For three-point calibration, add the Bluelab pH 10.0 Calibration Solution sachet for full-range accuracy.
Note: Use fresh solution for each calibration. Do not reuse sachets. Store in a cool, dry place away from direct sunlight.
