Pathfinder Instruments is a leading supplier of process and water quality meters, probes & instruments. We specialize in process water measurement such as pH and Conductivity analysis and monitoring.

Our relationship with other product lines, Sensorex, GPI, Blue-White, GF+ Signet and others, give us the ability to accommodate process metering of Flow, Pressure, Temperature and Level measurement and control.

The objective at Pathfinder Instruments is to give our customers the most reliable and accurate equipment to match their needs and budget. Because of our ability to meet specialized needs, we have knowledge to support these products technically.

Pathfinder Instruments has been providing support of the needs for 27 years and ready to help you with your process demands.

We Assure:

Competitive Pricing

Many Items on our website are priced below list price because we offer the best competitive pricing anywhere.

Friendly Customer Service

When the unexpected happens, there is no substitute for friendly technical support


Honesty in Our Dealings

Never forgetting that it is one of our customers’ “Inalienable Rights”

Technical Assistance

Here at Pathfinder Instruments, our primary goal is to support every product that we sell and help each customer on instrumentation selection and products that fit your current process. We will guide you through calibrations, set-up and documentation if needed to help with your purchased equipment.

Pathfinder Instruments

21955 Plummer Street
Chatsworth, CA 91311

Hours of Operation

9:00 AM – 5:00 PM PST