Ask a research-administration question
Answers are drawn from CASRAI and the rest of the CASRAI corpus, with a link to every source.
Answers are AI-generated from CASRAI’s own published pages and can be wrong, so check the linked sources before relying on one; your question is logged without personal data — never sold, never used to train a third-party model — to show us what CASRAI is missing, so please do not type personal or confidential details. How we use this
CASRAI is the reference for research administration — bookmark it for the next question.
Memmert
Memmert Digital Water Baths – 6L–50L
$1,482.00 - $2,756.00
In stockPrice varies by Size.
Memmert WTB series digital water baths in six sizes from 7.5 L to 51 L of filled bath volume. All models share a +10 °C to +100 °C setting range, 0.1 °C setting accuracy, a 3.5 in colour touchscreen with PID control and a 1 min to 99 h 59 min timer. Interiors are deep-drawn stainless steel (W.St. 1.4301) with no corners or edges and a central drain, and a stainless gable cover is standard equipment.
Choose Size to continue.
Buying through procurement?
Generate a formal quotation for 1 × this item, plus our W-9 — everything your finance department needs to raise a purchase order.
Choose Size to continue.
Description
The Memmert WTB series covers temperature control of ointments, emulsions, samples, plates and nutrient solutions in the laboratory, as well as warm storage and calibration work. Six sizes are offered. The nominal size in the model name differs slightly from the filled bath volume on the datasheet, so specify against the volume figure below rather than the model number.
Sizes
- WTB6 – 7.5 L. Interior 277 x 217 x 150 mm; casing 479 x 289 x 375 mm; approx. 1000 W at 115 V. Liquid level min 40 mm, max 114 mm.
- WTB11 – 10 L. Interior 267 x 207 x 200 mm; casing 479 x 289 x 425 mm; approx. 1000 W at 115 V. Liquid level min 40 mm, max 164 mm.
- WTB15 – 17.1 L. Interior 482 x 277 x 150 mm; casing 749 x 349 x 375 mm; approx. 1420 W at 115 V. Liquid level min 20 mm, max 114 mm.
- WTB24 – 23.1 L. Interior 472 x 267 x 200 mm; casing 749 x 349 x 425 mm; approx. 1420 W at 115 V. Liquid level min 20 mm, max 164 mm.
- WTB35 – 37.5 L. Interior 602 x 482 x 150 mm; casing 868 x 554 x 375 mm; approx. 1840 W at 115 V. Liquid level min 20 mm, max 114 mm.
- WTB50 – 51 L. Interior 592 x 472 x 200 mm; casing 868 x 554 x 425 mm; approx. 1840 W at 115 V. Liquid level min 20 mm, max 164 mm.
Temperature and control
Setting range is +10 °C to +100 °C, with a working range of at least 5 °C above ambient to +100 °C with the cover fitted, depending on ambient pressure. Setting accuracy is 0.1 °C. Control is by microprocessor PID with an integrated autodiagnostic system and fault indicator, driven from a 3.5 in colour graphic touchscreen showing set and actual temperature and remaining programme time. Two-point calibration is supported. A digital timer runs from 1 minute to 99 hours 59 minutes with visual and acoustic signalling.
Safety and construction
A two-stage safety system guards against overtemperature: a pressure sensor for level monitoring and a thermal fuse that shuts down heating on fault. An individually adjustable overtemperature alarm gives visual and acoustic warning, and an independent temperature limiter switches off the heating in case of failure. Heating is a corrosion-proof large-area element on the outside of the interior, so there is no immersed heater in the working volume. The tray is deep-drawn stainless steel (W.St. 1.4301) without corners or edges for cleaning, with a central drain and no obstructing internal fittings. A stainless steel gable cover and the drain system are standard equipment.
Installation
Vent openings on the left and rear must remain clear: at least 100 mm to the wall at the sides and 150 mm at the rear, with at least 750 mm from the top of the bath to the ceiling. Permitted ambient conditions are +5 °C to +40 °C at up to 80 % relative humidity, non-condensing.
Frequently asked questions
How do the nominal sizes map to actual bath volume?+
The datasheet volumes are 7.5 L (WTB6), 10 L (WTB11), 17.1 L (WTB15), 23.1 L (WTB24), 37.5 L (WTB35) and 51 L (WTB50). Specify against these figures rather than the number in the model name.
What is the temperature range and control accuracy?+
Setting range is +10 °C to +100 °C on every model, with a working range of at least 5 °C above ambient up to +100 °C with the cover fitted, depending on ambient pressure. Setting accuracy is 0.1 °C, under microprocessor PID control with two-point calibration.
What are the electrical requirements?+
At 115 V, 50/60 Hz: approx. 1000 W for the WTB6 and WTB11, approx. 1420 W for the WTB15 and WTB24, and approx. 1840 W for the WTB35 and WTB50. All models are also specified at 230 V, 50/60 Hz.
What overtemperature protection is fitted?+
A two-stage system - a pressure sensor for level monitoring plus a thermal fuse that shuts down heating on fault - together with an individually adjustable visual and acoustic overtemperature alarm and an independent temperature limiter that switches off the heating in case of failure.
What is the interior made of, and how is it drained?+
A deep-drawn stainless steel tray in W.St. 1.4301, formed without corners or edges to simplify cleaning, with a central drain and no obstructing internal installations. The drain system and a stainless steel gable cover are standard equipment.
How much clearance does the bath need?+
Vent openings on the left and rear sides must stay unobstructed: at least 100 mm to the wall at the sides, at least 150 mm to the rear, and at least 750 mm from the top of the bath to the ceiling. Ambient conditions must be +5 °C to +40 °C and no more than 80 % relative humidity, non-condensing.
