In stock
SKU: 30393199
Regular price $101.25
Regular price -38% $162.00 Sale price $101.25
The Ohaus ST20M-B STARTER PEN METER: your reliable companion for accurate water analysis in a compact and user-friendly design.
Designed with precision and simplicity in mind, the ST20M-B offers effortless measurement capabilities for pH and temperature, ensuring precise readings every time. Whether you're in the laboratory, field, or classroom setting, this pen meter delivers consistent performance and ease of use.


- Equipped with dual functionality, the ST20M-B enables quick and accurate measurement of pH levels as well as temperature, providing comprehensive insights into water quality.
- Built with Ohaus' renowned quality and reliability, this pen meter ensures consistent and precise readings, empowering you to make informed decisions with confidence.
- Featuring a streamlined interface and intuitive controls, the ST20M-B is easy to operate, making it suitable for both novice and experienced users alike.
- With its compact size and lightweight design, this pen meter is highly portable, allowing you to conveniently carry it wherever your analysis takes you.
- Constructed with durable materials, the ST20M-B is built to withstand the rigors of daily use, ensuring long-term performance and reliability.
battery-life 100 Hours with Disposable Batteries
brand Ohaus
dimensions 7.28 in x 1.5 in x 1.77 in
display Yes
list-price 162.00
Manual ST_Manual.pdf
manufacturer-part-number 30393199
model 30393199
net-weight 0.25
power 4 AG13 Batteries
Spec Sheet STpen_meters_Spec_Sheet.pdf
temperature-sensor 50 KΩ NTC
working-environment 50°F – 104°F, 85%RH, non-condensing

We have a 30-day return policy, which means you have 30 days after receiving your item to request a return.

To be eligible for a return, your item must be in the same condition that you received it, unused, and in its original packaging.

Free Ground shipping is for all online orders over $500 and is inside of the contiguous United States (excluding Hawaii and Alaska).

Free Ground shipping does not apply for demo/used/refurbished/clearance units and any order over 100 lbs of actual or dimensional weight (other exclusions also applies).