The Ohaus Starter 400 Portable pH Meter (ST400-B) is a durable, waterproof, battery-operated pH meter ideal for field testing, built with IP67 waterproof housing and a rubber cover for prolonged use in any field environment. This configuration ships without a probe, for field teams equipping their own electrode.
Measurement Range
-2.00 to 16.00 pH; -1999 to 1999 mV
Resolution
0.01 pH; 1 mV
Accuracy
+/-0.01 pH; +/-0.5% F.S.
Housing
IP67 waterproof
Battery
Rechargeable lithium, 40 hrs runtime
Frequently Asked Questions
Q: How long does the battery last? A: The rechargeable lithium battery provides up to 40 hours of continuous use and more than 300 charge cycles.
Q: Is it waterproof? A: Yes, the ST400 has an IP67 waterproof housing, rubber cover, and IP67-rated probe.
Q: What is the difference between the -B, -F, and -G models? A: -B ships without a probe; -F includes the ST320 plastic gel pH electrode; -G adds a carrying bag to the -F kit.
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