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AA Review: I followed the directions to the letter and the calibration solutions worked perfectly. I feel so much better about my grow knowing the reading I am getting are true readings. The solution hand my Blue Labs OnePen with perfectly calibrated and fast results Review: I own the blue lab ph pen and EC meter, and these solutions are perfect for calibration of the pH pen. I bought large bottles, still working super well a year later, probably have enough to last me another 3 years of regular monthly calibration checks/calibrations. Between the nice test pen and these solutions my hydroponic results have improved. Good stuff.
| ASIN | B01GQVSQGG |
| Customer Reviews | 4.7 4.7 out of 5 stars (1,079) |
| Date First Available | March 22, 2017 |
| Is Discontinued By Manufacturer | No |
| Item model number | BL-COMBO-1 |
| Package Dimensions | 18.49 x 14.1 x 7.01 cm; 1.03 kg |
M**J
I followed the directions to the letter and the calibration solutions worked perfectly. I feel so much better about my grow knowing the reading I am getting are true readings. The solution hand my Blue Labs OnePen with perfectly calibrated and fast results
R**A
I own the blue lab ph pen and EC meter, and these solutions are perfect for calibration of the pH pen. I bought large bottles, still working super well a year later, probably have enough to last me another 3 years of regular monthly calibration checks/calibrations. Between the nice test pen and these solutions my hydroponic results have improved. Good stuff.
M**G
Fast delivery, quality products
M**L
I do not dislike anything about this product is my first time using this product with a blue lab pH pen I’ve got to say it’s worth the money both these are 16.9 fl oz. This will probably last me the next 12 months.
P**N
Works perfect for recalibration of blue lab ph pen. What else could you ask for?
TrustPilot
2 周前
3 周前