🧪 Calibrate like a pro — precision that keeps you ahead of the curve!
The Hanna Instruments HI7004/1L pH 4.01 Calibration Solution is a premium, NIST-traceable buffer designed for precise pH meter calibration. Manufactured to ISO 3696/BS3978 standards with high-purity ingredients, it offers ±0.01 pH accuracy at 25°C. Featuring a red dye for easy identification, a temperature reference chart, and a tamper-proof seal, it ensures reliable, long-lasting performance with a 5-year shelf life unopened—ideal for laboratory and industrial calibration needs.
| ASIN | B00RYPG6XE |
| Item model number | HI7004/1L |
| Manufacturer | Hanna Instruments |
| Package Dimensions | 19.81 x 7.19 x 7.11 cm; 590 g |
S**L
Helps calibrate the PH level because the machine I ordered wasn’t working after using this it was good, and price worthy
R**S
I have used Hanna calibration buffer solutions for years with no problems.
J**N
Works well it's reliable has a long shelf life. I've been using Hanna calibration solutions for years now and I have nothing but good to say and report about it
F**A
Excellent ,,, meets my expectations
A**R
Good product, would buy again. Make sure you get the 7.1 buffer for a two point calibration.
TrustPilot
2 周前
2 周前
