Send a part number, a photo, or a whole BOM — we supply it and stand behind it. Worldwide shipping to 80+ countries.

Image not available
OHAUSHandheld pH Meters

OHAUS pH Meter: ORP/pH/Temp, Electrodes Sold Separately, Stand-Alone Electrode Holder

The OHAUS ST400-B is a handheld pH meter that measures ORP, pH, and temperature with a pH accuracy of ±0.01 pH and automatic temperature compensation. It includes a stand-alone electrode holder; electrodes and…

SKU 3G-OTH-378087

Brand
OHAUS
Item
pH Meter: ORP/pH/Temp, Electrodes Sold Separately, Stand-Alone Electrode Holder
Category
Handheld pH Meters
Available to Order
Trade pricing by quote — replies within 24h
Qty
WhatsApp an engineer
No account needed — your quote request goes straight to our engineers. A free account lets you track quotes and re-order faster.
Worldwide Shipping
Air & sea freight
Datasheet on Request
Technical specs
1-Day Quote
Replies within 24h

Technical Specifications

OHAUS
Manufacturer Part Number
ST400-B
Type
Electrodes Sold Separately, Stand-Alone Electrode Holder, ±0.01 pH
pH Accuracy
±0.01 pH
Test Parameters
Temperature
Temp Compensation
Automatic
Other Accessories Included
Stand-Alone Electrode Holder
Measurement Components Included
Electrodes Sold Separately
Reagents and Solutions Included
Reagents Sold Separately
View Full Spec Sheet

Technical Documents

No technical documents available for this product.
Request documentation
Not sure this is the right part? Get a recommendation.

Need installation or engineering help?

Installation, commissioning, maintenance plans, system design, and bundled product + service quotes — one team handles the full scope.
Talk to an engineer

Ask a question

OHAUS Products
3G Electric (S) Pte. Ltd. — Singapore

Product Description

The OHAUS ST400-B is a handheld pH meter that measures ORP, pH, and temperature with a pH accuracy of ±0.01 pH and automatic temperature compensation. It includes a stand-alone electrode holder; electrodes and reagents are sold separately.

Used in

Common applications for OHAUS
Pharmaceutical quality control — OHAUS Defender 5000 bench scale for raw material weighing with RS-485 data logging
Environmental water testing — OHAUS ST300D-B handheld dissolved oxygen meter for field DO and temperature measurement
Food processing — OHAUS CX1201 portable balance for portion control and ingredient weighing in dry environments
Laboratory sample preparation — OHAUS modular dry bath block for heating 15 mL tubes in molecular biology protocols
Industrial production — OHAUS D33P75B1R1 bench scale with RS-232 for checkweighing in packaging lines
Histology lab — OHAUS stainless steel tube rack for slide staining and sample organization

OHAUS Products

3G Electric supplies OHAUS handheld ph meters. We supply genuine products with in-stock availability on common SKUs, technical documentation, commissioning support, and warranty service — worldwide.

You might also need

Burners & Combustion Pumps & Compressors Spare Parts All Products

Similar products

Matched by specification & description
OHAUS
OHAUS
OHAUS pH Meter: ORP/pH/Temp, Electrodes Sold Separately, AC Adapter/Stand-Alone Electrode Holder (MPN ST2200 -B). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Temperature; Other Accessories Included: AC Adapter; Manufacturer Part Number: ST2200 -B.
OHAUS
OHAUS
OHAUS pH Meter: ORP/pH/Temp, ST322 Electrode, AC Adapter/Stand-Alone Electrode Holder, ±0.01 pH (MPN ST2200 -F). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: ST322 Electrode; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Temperature; Other Accessories Included: AC Adapter; Manufacturer Part Number: ST2200 -F.
OHAUS
OHAUS
OHAUS pH Meter: ORP/pH/Temp, ST410 Electrode, AC Adapter/Stand-Alone Electrode Holder, ±0.0102 pH (MPN AB41PH -F). Key specifications — pH Accuracy: ±0.0102 pH; Temp Compensation: Automatic; Measurement Components Included: ST410 Electrode; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: pH; Other Accessories Included: AC Adapter; Manufacturer Part Number: AB41PH -F.
OHAUS
OHAUS
OHAUS pH Meter: ORP/pH/Temp, Electrodes Sold Separately, AC Adapter/Stand-Alone Electrode Holder (MPN AB41PH -B). Key specifications — pH Accuracy: ±0.0102 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Temperature; Other Accessories Included: AC Adapter; Manufacturer Part Number: AB41PH -B.
OHAUS
OHAUS
OHAUS pH Meter: Conductivity/ORP/pH/Temp/Total Dissolved Solid, Electrodes Sold Separately, ±0.01 pH (MPN AB23PH -B). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Conductivity; Other Accessories Included: Stand-Alone Electrode Holder; Manufacturer Part Number: AB23PH -B.
OHAUS pH Meter: Millivolt/pH/Temp, Electrodes Sold Separately, AC Adapter/Electrode Holder (MPN ST5000-B). Key specifications — pH Accuracy: ±0.002 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: pH; Other Accessories Included: Electrode Holder; Manufacturer Part Number: ST5000-B.
OHAUS
OHAUS pH Meter: Millivolt/pH/Temp, Electrodes Sold Separately, AC Adapter/Electrode Holder (MPN ST5000-B). Key specifications — pH Accuracy: ±0.002 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: pH; Other Accessories Included: Electrode Holder; Manufacturer Part Number: ST5000-B.

More from OHAUS

View all OHAUS parts
OHAUS pH Meter: Millivolt/pH/Temp, Electrodes Sold Separately, Reagents Sold Separately, ±0.01 pH (MPN ST300-G). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Temperature; Manufacturer Part Number: ST300-G.
OHAUS
OHAUS pH Meter: Millivolt/pH/Temp, Electrodes Sold Separately, Reagents Sold Separately, ±0.01 pH (MPN ST300-G). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Temperature; Manufacturer Part Number: ST300-G.
OHAUS pH Meter: Millivolt/pH/Temp, Electrodes Sold Separately, Reagents Sold Separately, ±0.01 pH (MPN ST300-B). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Temperature; Manufacturer Part Number: ST300-B.
OHAUS
OHAUS pH Meter: Millivolt/pH/Temp, Electrodes Sold Separately, Reagents Sold Separately, ±0.01 pH (MPN ST300-B). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Temperature; Manufacturer Part Number: ST300-B.
OHAUS pH Meter: Millivolt/pH/Temp, Electrodes Sold Separately, Reagents Sold Separately, ±0.01 pH (MPN ST300). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Millivolt; Manufacturer Part Number: ST300.
OHAUS
OHAUS pH Meter: Millivolt/pH/Temp, Electrodes Sold Separately, Reagents Sold Separately, ±0.01 pH (MPN ST300). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: Electrodes Sold Separately; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: Millivolt; Manufacturer Part Number: ST300.
OHAUS
OHAUS
OHAUS pH Meter: ORP/pH/Temp, ST320 Electrode, Stand-Alone Electrode Holder, Reagents Sold Separately (MPN ST400-F). Key specifications — pH Accuracy: ±0.01 pH; Temp Compensation: Automatic; Measurement Components Included: ST320 Electrode; Reagents and Solutions Included: Reagents Sold Separately; Test Parameters: pH; Other Accessories Included: Stand-Alone Electrode Holder; Manufacturer Part Number: ST400-F.