Jenco Instruments was founded by Mr. John Jen over 40 years ago on the idea that advances in semiconductor chips and circuit boards can play major roles in miniaturizing water quality instruments while increasing ease of use, features and accuracy.  That idea led to the creation of the very first portable digital pH meter and was sold under Cole-Parmer's private brand.  

Today the same innovative spirit is prevalent in our line of water quality instruments which now spans pH, ORP, conductivity, dissolved oxygen, ion and temperature meters, testers, portable, benchtops and online analyzers.  Though Jenco remains a family owned business and is small compared to consolidated multinational corporations, it is proud that its products can be found in research facilities, universities, manufacturing facilities, municipalities and homes all over the world.  The EPA, NASA, Anheiuser-Busch, Craft Foods and thousands of other companies trust their water quality readings to Jenco.

All Jenco meters are designed and manufactured in its ISO9001 and IECQ Hazardous Substance Process Management certified manufacturing facility in Shanghai, China.  This same Jenco facility also designs and makes products for other high end water quality manufacturers.

Becoming a distributor

Jenco products are only sold through authorized distributors.  Our distributors are large global catalogs, small niche online stores and everything in between, and we continuously look to work with quality distributors that can best serve the market and get the right products into the hands of the end user.

Our North America office is in San Diego, California, and it provides distributor support, repair services and fulfillment, including drop ship to end-users.  We welcome you to get to know Jenco better and contact us to start selling Jenco products.

Featured Products

6010M/6010N

pH, ORP, Temperature Portable Meter.. The Classic series model 6010N and 6010M are low price, IP65 and RoHS compliant pH meter with pH or ORP and temperature readouts and 50 sets of data memory storage (6010M)..

3010M

Conductivity, TDS, Salinity, Temperature Portable Meter. The Classic series 3010M is a low price, 2-wire, IP65 and RoHS compliant conductivity meter with 50 sets of data memory storage.

3020M

Conductivity, TDS, Salinity, Temperature Portable Meter. The Classic series 30120M is a price competitive, IP65 and RoHS compliant conductivity meter with a 4 wire cell covering the full conductivity range from 50mS up with an addition of a 2 wire cell to measure ultra pure water and 50 sets of data memory storage.

9010M/9020M

Dissolved Oxygen, Temperature Portable Meter. The Classic series 9010M is a price competitive, IP65, RoHS compliant and polarographic type dissolved oxygen meter with 50 sets of data memory storage.

7810

Temperature Portable Meter. Thermocouple temperature portable meter with simultaneous display of temperature reading, time and date. It uses multiple types K, J, T input temperature sensor and features min./max. temperature displays function. It is IP67, RoHS compliant and with 50 sets of data memory storage.

6175

Next generation of pH benchtop meter with mV and temperature readouts, high mV resoution, and large LCD.

3175

Next generation conductivity benchtop meter, Jenco EC3175 has an large, backlit LCD display, adjustable cell constant.

3621/3631

pH, ORP, Temperature In-line Controller. 1/8 DIN, RoHS compliant, panel mount pH/ORP/Temp controller with 2 sets of programmable on/off relay and backlight. Extremely price competitive