Solinst equipment is entirely unreliable...

for monitoring groundwater, as I've just discovered that two more of their LTC loggers have died while deployed in the field. That makes a total of six of eight Solinst loggers that have ceased to function and resulted in months of lost data, a failure rate of 75% based on my experience. Sheesh.

Here's a blog post about their earlier failures, and it doesn't involve battery problems. In addition, I got no satisfaction from their technical support staff, and valuable research data was irretrievably lost.

They have competitors. Use them.