Memmert water bath WTB50, 45 L, touch display, +100 °C

The Memmert water bath WTB50 belongs to Memmert's new water bath generation.

The Memmert water bath WTB50 is the largest model in the new WTB range at 45 litres, built for high sample throughput and several test tube racks at once.

New model generation

The WTB50 is part of the full relaunch of the Memmert water bath range for price list 01-2027, which replaces the previous model line entirely. Accessories such as lids, base grids, insert racks and test tube racks now come with new order numbers. The pump module P7 for circulating the water bath can now be ordered as a factory option, previously the circulation pump was a separate retrofit part. When reordering accessories, it is worth checking the current order number, listed further down in this description.

Touch display and controls

Temperature control runs through a 3.5-inch colour graphic touch display with 2-point calibration, setting accuracy is 0.1 °C. The customisable remote screen “CustomView” can be adapted to your own workflow. The display shows the key operating values at a glance, no separate control panel is needed.

Stainless steel tank and cleaning

The deep-drawn stainless steel tank (1.4301) without corners or edges has an integrated central drain system, important at the largest fill volume in the range. The heater sits outside the chamber, the housing is stainless steel, four adjustable feet carry the weight safely. That makes daily cleaning and disinfection between two different batches easier.

Connection and operation

Connected load is 2,840 watts at 230 V and 1,840 watts at 115 V (50/60 Hz). The 115 V version is available as option X2 at no extra cost. A standard lab socket is enough, no dedicated high-current connection is needed.

Size within the WTB range

At 45 litres, the WTB50 is the largest of the six WTB models. Controls, material and drain system are identical across the whole range, what mainly differs is internal dimensions, capacity, weight and, from the WTB15 upward, whether the pump module P7 is available.

Footprint and transport

Internal dimensions are 650 x 190 x 450 mm, external with the flat lid 747 x 547 x 342 mm, with the sloped lid 747 x 547 x 454 mm. Packed, the WTB50 arrives in a box measuring 840 x 680 x 495 mm, gross weight 38.5 kg, net weight 33.5 kg. As the largest and heaviest model in the range, it is best set up by two people.

Pump module P7

For the WTB50, the pump module P7 can be ordered as a factory option and handles continuous circulation of the heat transfer medium at the largest fill volume in the range. Without P7, the water surface stays calm.

Calibration and documentation

A factory calibration certificate is not part of the standard equipment and is not included in the scope of delivery. Anyone who needs documented calibration, for example for a quality management system under ISO 9001 or for test equipment monitoring, can order it as an additional chargeable service through our procurement service. That way the initial commissioning can be documented without having to ship the unit off separately.

Typical applications

With a setting range of +10 to +100 °C, the WTB50 covers a wide range of tempering tasks in the lab. With high sample volumes, the large capacity cuts down on the number of runs needed in daily lab work.

• Tempering large sample volumes or many vessels across several test tube racks
• High-throughput lab routine where a larger bath cuts down on waiting time
• Thawing and warming larger batches, with active circulation via the pump module if needed
• Running as a central water bath for several workstations in chemistry or food labs

As the largest model in the range, the WTB50 is suitable for labs with high sample throughput or several test tube racks running in parallel. For smaller sample volumes, the more compact models in the WTB range, such as the WTB35, are often the more economical choice.

Manufacturer's WEEE registration number (Memmert GmbH + Co. KG, Stiftung EAR): DE 66812464.

Memmert units bought from us are covered for three years from delivery: the first 12 months are followed by a 24-month warranty under Memmert's terms, handled through us. Your statutory rights remain unaffected.

Technical details

Scope of delivery

• 1× Memmert water bath WTB50 (base unit)
• 1× stainless steel sloped lid

A factory calibration certificate is not part of the scope of delivery, details are given above in the section Calibration and documentation. The pump module P7 is also a factory option and not fitted as standard.

Accessories for the WTB50

The following accessories are available for the WTB50 under the new order numbers:

The stainless steel flat lid (8 openings Ø 107 mm) and the base grid are available as accessories. The complete shaking attachment SV3550 is available as an accessory, and the large basket insert on request through our procurement service.

Individual requirements & procurement service

Insert racks and test tube racks with new order numbers are also available for the WTB50, matched to the relevant size. Our procurement service helps with choosing the right accessories, with spare parts, and with individual calibration requests.