Accurate pH meter calibration — Ready-to-use pH 7.01 buffer to keep nutrient solution readings reliable in hydroponics or soil growing.
Trust: hand-picked by BloomLED, French-engineered indoor growing expert for 10+ years.
pH 7.01 buffer · 250 ml · ~12 calibrations · ±0.01 pH precision
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In indoor growing, mastering the pH of your nutrient solution is non-negotiable. The IONIC pH 7.01 buffer hand-picked by BloomLED lets you calibrate your pH meter in seconds and keeps your readings accurate, calibration after calibration.

| Specification | Detail |
|---|---|
| Type | pH 7.01 buffer solution |
| Volume | 250 ml |
| Calibrations | ~12 calibrations |
| Precision | ±0.01 pH at 25°C |
| Compatibility | All digital pH meters |
| Storage | Dry place, 5–30°C |
Formulated with analytical-grade buffer salts for perfect chemical stability. Readings stay reliable even after several openings.
Ready to use: open, dip the electrode, calibrate. No dilution, no preparation. About 15 seconds per calibration.
Ideal for hydroponics, aeroponics, coco and soil growing. Compatible with all major digital pH meters (Hanna, Bluelab, Milwaukee, GHE).
BloomLED recommends calibrating at least once a month, and systematically before every grow cycle or after long inactivity. In hydroponics, a weekly check is ideal to secure nutrient uptake.
How long does the buffer keep after opening?Sealed, the buffer keeps for ~24 months from manufacturing date. Once opened, close the bottle tightly and use within 6 months to preserve accuracy. Store at 5–30°C, away from direct sunlight.
BloomLED tip: always pair the pH 7.01 buffer with a pH 4.01 buffer for a two-point calibration — the pro method that guarantees precision across the full indoor-growing range (5.5 to 6.5).