General Hydroponics uses the highest-quality reference solutions, allowing growers to calibrate many popular brands of PH, EC and TDS meters (NaCl scale or the 442 scale). General Hydroponics technicians check each batch to ensure that our solutions are precisely calibrated and yield reliable readings each time they are used.
General Hydroponics Ph 4.01 and Ph 7.0 Calibration Solution Kit_ 8 oz
Was:
$127.84
Now:
$63.92
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General Hydroponics Ph 4.01 and Ph 7.0 Calibration Solution Kit_ 8 oz
- SKU:
- W212958
- UPC:
- 765018456002
- Condition:
- New
- Availability:
- Free Shipping from the USA. Estimated 2-4 days delivery.
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General Hydroponics PH 4.01 Calibration Solution for Gardening, 8-Ounce
Was:
$77.70
Now:
$38.85
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General Hydroponics Ph 7.0 Calibration Solution - 8 Ounces, 1 bottle
Was:
$79.80
Now:
$39.90
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General Hydroponics pH 7.0 Calibration Solution 8 oz Ounce _ ph Meters
Was:
$131.86
Now:
$65.93
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General Hydroponics pH 7-0 Calibration Solution - 8 Oz
Was:
$63.98
Now:
$31.99
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PH 4.01/7.0/10.01 buffer solution SET 20ml Calibration Fluids aquarium PH Meter
Was:
$117.52
Now:
$58.76