









📊 Calibrate like a pro, grow like a boss!
The bluelab pH 4.0 & 7.0 Calibration Solution (500ml) offers dual-point calibration for precise and reliable pH meter accuracy, essential for professional plant care and scientific measurements. Its 500ml volume ensures long-lasting use, making it a staple for anyone serious about maintaining optimal pH levels.
























| ASIN | B01GQVSQGG |
| Best Sellers Rank | #23,977 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #28 in Lab pH Meters |
| Date First Available | June 7, 2016 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 2.27 pounds |
| Item model number | BL-COMBO-1 |
| Manufacturer | bluelab |
| Package Dimensions | 7.01 x 6.02 x 2.83 inches |
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