Ohaus ST400D Starter Portable Dissolved Oxygen Meter with Probe, 0 to 20 ppm

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Ohaus ST400D Starter 400D DO Portable

Save $649.06

Authorized Ohaus DistributorSKU: 30378543

Model: ST400D

Price:

$1,427.94 $2,077.00

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Pickup currently unavailable at 14637 Arminta Street

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For over a century, OHAUS has perfected the art of measurement through our line of weighing products. Taking the same approach to our weighing equipment, OHAUS now delivers Starter ST400D - a practical, affordable, low-maintenance DO Portable Meter equipped with optical technology. The ST400D is ideal for applications that require simple yet accurate DO measurements.

accuracy	±0.2 mg/L(< 8 mg/L) or ±0.3 mg/L(8~20 mg/L); ±0.3 °C
Applications	Field and lab Dissolved Oxygen measurement
battery-life	12 hours with Disposable Batteries
brand	Ohaus
construction	ABS Housing
dimensions	5.91 x 1.38 x 3.54 in
display	Backlit Color Liquid Crystal Display (LCD)
electrode	STDO21 (Included)
list-price	2077.00
Manual	Manual_ST400D.pdf
manufacturer-part-number	ST400D
measurement-range	0.00 – 20.0 mg/L(ppm); 0 – 50°C
measurement-resolution	0.01 mg/L; 0.1%; 0.1 °C
net-weight	0.35 lb
number-of-wells	30378543
parameter	Dissolved Oxygen
power	4 AAA (LR03) Batteries (Included)
Spec Sheet	Datasheet_ST400D.pdf
temperature-compensation	Automatic
temperature-sensor	10 KΩ NTC
working-environment	41°F – 104°F, 80% RH, Non-condensing (5°C – 40°C, 80% RH, Non-condensing)

All Sales outside of the US and Canada are final (NO REFUNDS/RETURNS/EXCHANGE).
Qualified Returns/Refunds/Exchange SHOULD BE MADE WITHIN (14) DAYS FROM DELIVERY DATE.
Returns from sales within US and Canada will be subject to inspection to determine condition of the item/s.
Only items that are brand new condition with ALL the parts and accessories that came with the box including the original packaging materials will be accepted.
Any used or opened items such as, but not limited to, accessories, supplies, and consumables are NOT returnable or exchangeable. Shipping and handling are non-refundable as well.
Customer will assume responsibility and will pay for shipping item/s for return or exchange.
Qualified return item/s will be issued 100% store credit for exchange and/or future purchases of items with the SAME BRAND or made by the same manufacturer.
A 25% RE-STOCKING FEE WILL APPLY for refund or to purchase another item/s of a brand different from the original purchase.

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We offer Net 30 terms for qualified business customers, allowing you to receive your order now and pay within 30 days of the invoice date.

Frequently Asked Questions

What applications is the Ohaus ST400D dissolved oxygen meter designed for?

The Ohaus ST400D is designed for dissolved oxygen testing in laboratories, environmental monitoring, aquaculture, wastewater treatment, food processing, and educational applications. Its portable waterproof design makes it suitable for both field and laboratory dissolved oxygen measurements.

What dissolved oxygen measurement range and accuracy does the Ohaus ST400D provide?

The Ohaus ST400D measures dissolved oxygen from 0.00 to 20.0 mg/L (ppm) with a resolution of 0.01 mg/L. It offers an accuracy of ±0.2 mg/L below 8 mg/L and ±0.3 mg/L from 8 to 20 mg/L, helping provide reliable and repeatable water quality measurements.

What type of dissolved oxygen probe is included with the Ohaus ST400D?

The Ohaus ST400D includes the STDO21 optical dissolved oxygen probe, which uses optical measurement technology for low-maintenance operation and fast readings. Unlike traditional membrane-style probes, optical probes reduce warm-up time and minimize routine maintenance requirements.

What features make the Ohaus ST400D suitable for field use?

The ST400D features a rugged IP54-rated housing, backlit color LCD display, wrist strap, lightweight portable design, and battery-powered operation for convenient field testing. Its optical probe technology also allows quick measurements without complicated sample preparation.

Can the Ohaus ST400D store measurement data?

Yes. The Ohaus ST400D can store up to 99 measurement records for convenient recall and documentation. This built-in memory function helps laboratories and field technicians improve data organization and simplify routine dissolved oxygen monitoring workflows.

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Ohaus ST400D Starter 400D DO Portable

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