Sentron SI Series ISFET pH Probes

ISFET pH Probes SI Series

When buying a Sentron pH meter (SI400 or SI600) you need to purchase one of the available ISFET Probes. You can take pH measurements with a combination of a SI pH meter and Probe using the ISFET (Ion Sensitive Field Effect Transistor) technology.
 

Models

All probes have an ISFET sensor based on the same technology. Each probe is the same when it comes to accuracy. The form and material make each probe different for different uses.

The following probes are available:
 

1. ConeFET: 18 cm long with a blunt tip
2. LanceFET: 19 cm long with a scharp tip voor easy penetration
3. CupFET: 18 cm with a flat tap (with cup)
4. LanceFET with handle: 22 cm long with a handle and 5 cm long probe
5. MiniFET: 8 cm long, 5 mm diameter and flat tip
6. MicroFET: 16 cm long with a thin (3 mm diam.) probe and micro sensor

When making a choice above, you can see a picture of each probe.
 

Usage

The probes can be used for multiple types of samples (wet/dry). The sensor doesn't need to be kept wet when stored. The ISFET sensor is less prone to damages and pressure in comparison with glass type sensors.

- Important -
When using the probes in soil or potting material, pelase make sure the sample does not conatin any sharp material, such as gritty sand, grit sharp rocks etc. These materials can damage the ISFET sensor when scraped by it. Please predrill a hole with a pick or screwdriver in sharp soil before inserting the probe.Soft(er) material such as perlite and vermiculite in potting mixes generally do not cause any problem.The ConeFET and LanceFET are suitable for soil measurement. For heavy soil use the LanceFET.
 

Specifications