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Rectangular metal laboratory chiller unit, 5L capacity, digital display, 220V power

HNZXIB

HNZXIB DLSB-5/20 5L -20°C laboratory supply

SKU CH-43CX-PHSV8 MPN DLSB-5/20

A 5 L refrigerated circulator that delivers liquid down to −20 °C with ±0.2 °C stability and a 20 L/min pump for rotary evaporators, reactors and freeze-dryers

  • Total capacity5L
  • Temperature range-10 °C~RT
  • Rated voltage220 V
  • Product typeCooling Chiller
  • 5 L reservoir supplies ample cooling fluid for extended runs
  • Microcomputer controller with digital display simplifies temperature setting
  • Brand-name compressor delivers reliable refrigeration down to -20 °C
  • Circulation pump moves 20 L/min at 4–6 m head for consistent flow
  • ±0.2 °C precision maintains stable conditions for sensitive reactions

Purpose and users

The HNZXIB DLSB-5/20 is a 5-litre refrigerated circulator built for laboratory cooling tasks. It serves chemists and technicians who need a stable low-temperature liquid bath for rotary evaporators, jacketed reactors or vacuum freeze-drying ovens. The unit delivers a no-load minimum of -24 °C with a control precision of ±0.2 °C. It is not suited for buyers who require larger reservoir volumes or lower temperature ranges such as -40 °C or below.

Interface and environmental limits

The circulator operates on a 220 V 50 Hz supply, with 110 V 60 Hz and 220 V 60 Hz versions available on request. It is rated for an ambient temperature of 25 °C and a humidity range of 60–80 % with ventilation. The pump provides a flow of 20 L/min and a lift of 4–6 m, so plumbing must accommodate that pressure and volume. Installations outside the stated ambient conditions or on incompatible mains voltages are not supported.

Deciding specification

The key figure is the refrigeration capacity of 1328–319 W across the operating range. This determines whether the chiller can remove heat fast enough for your specific reaction or condenser load. If the application demands continuous cooling power outside that window, a different capacity model from the 5 L to 100 L series would be required.

How it compares

Measured against everything we stock in Lab Equipment & Supplies, at today’s prices. Recalculated every night.

Price $1,416.99
Pricier than about 81% of the 734 comparable items (median $60.99).

Specifications

Product
Total capacity5L
Product typeCooling Chiller
Power
Rated voltage220 V
Environment & compliance
Temperature range-10 °C~RT

Questions about this item

Should I choose the 5L model or a larger capacity such as 10L or 20L?

The 5L reservoir holds 5000 ml and delivers up to 20 L/min flow with 4–6 m lift. Larger models from 10L to 100L are available if your application needs more volume or a lower minimum temperature down to -120°C.

What does the -20°C rating mean when the chiller is connected to a rotary evaporator or reactor?

Under no-load conditions the unit reaches -24°C, and the stated range is -20°C to ambient with ±0.2°C precision. Actual bath temperature will depend on heat load, ambient temperature up to 25°C, and the 1328–319 W cooling capacity curve.

The pump is rated at 20 L/min and 4–6 m lift — what does that limit in practice?

That flow and head determine the maximum tubing length, diameter and elevation change you can run to external equipment such as jacketed reactors or vacuum pumps without exceeding the pump’s pressure capability.

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