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HHW Constant-Temperature Water Tank

HHW Constant-Temperature Water Bath Product Introduction This product is designed for use in medical and health institutions, research facilities, colleges and universities, and laboratories. It can be used for evaporation, concentration, and constant‑temperature heating of chemical reagents, serum testing, and the incubation of biological products. Product Features: 1. The outer shell is made of cold‑rolled steel, while the inner tank and top cover are crafted from high‑quality stainless steel. 2. PID temperature control. 3. User‑friendly operation, stable performance, and precise temperature regulation. 4. Auxiliary menu functions include over‑temperature alarm and a deviation‑correction menu with lockout capability. Technical Parameters: | Model | HHW21‑420 | HHW21‑600 | |---------------|-----------|-----------| | Heating Method | Natural water convection | Natural water convection | | Operating Temperature Range | Pt+5–100°C | Pt+5–100°C | | Temperature Resolution | 0.1°C | 0.1°C | | Temperature Fluctuation | ±1°C | ±1°C | | Temperature Distribution Accuracy | ±1°C | ±1°C | | Inner Construction | Stainless steel plate | Stainless steel plate | | Outer Construction | Cold‑rolled steel plate | Cold‑rolled steel plate | | Surface Finish | Electrostatic powder coating | Electrostatic powder coating | | Top Cover | Stainless steel plate | Stainless steel plate | | Controller | — | — | | Heater | Stainless steel heating element | Stainless steel heating element | | Rated Power | 1000 W ±10% | 2000 W ±10% | | Temperature Control Mode | PID | PID | | Temperature Setting Method | Touch‑button interface | Touch‑button interface | | Temperature Display | Measured temperature shown on a three‑digit digital display | Measured temperature shown on a three‑digit digital display | | Optional Sensors | CU50 | CU50 | | Internal Dimensions (L × W × H, mm) | 420 × 180 × 105 | 600 × 300 × 150 | | External Dimensions (L × W × H, mm) | 580 × 240 × 260 | 760 × 360 × 330 | | Number of Dividers | One layer | One layer | | Voltage | 220 V, 50 Hz | 220 V, 50 Hz |

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Environmental Testing Equipment

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lbt@lbt.ltd

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+86-15102211717

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Description

Product Introduction:

This product is intended for use in medical and health care facilities, research institutions, colleges and universities, laboratories, and other similar settings. It can be used for evaporation, concentration, and constant‑temperature heating of chemical reagents, as well as for serum testing and the incubation of biological products under controlled temperature conditions.

Product Features:

1. The outer shell is made of cold-rolled steel sheet, while the inner liner and top cover are both crafted from high-quality stainless steel.
2. PID control.
3. Convenient operation, stable performance, and precise temperature control.
4. Auxiliary menu: implements over‑range alarm and deviation correction; menu locking.

Technical Specifications:

Model number		HHW21-420	HHW21-600
Method	Natural water convection heat transfer
Performance	Operating temperature range	Pt+5-100℃
	Temperature resolution	0.1℃
	Temperature fluctuation degree	±1℃
	Temperature distribution accuracy	±1℃
composition	Interior design	Stainless steel plate
	Exterior	Electrostatic powder coating on the surface of cold-rolled steel sheet
	Upper cover	Stainless steel plate
Controller	Heater	Stainless steel heating tube
	Rated power	1000±10%	2000±10%
	Temperature control method	PID
	Temperature setting method	Touch-button settings
	Temperature display method	Temperature measurement, 3-digit display
	Program control	Optional equipment
	Sensor	CU50
Specifications	Internal dimensions: Length × Width × Height (mm)	420180105	600300150
	External dimensions: Length × Width × Height (mm)	580240260	760360330
	Number of partition layers	First floor
	Voltage	220V50HZ

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Customer Reviews

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From Thomas Bennett, Quality Director, UK plastic pipe factory

2026.06.05

★★★★★

“We have purchased two sets of pipe testing equipment from Laibote (Tianjin) for 18 months. The ring stiffness and hydrostatic burst testing machines run stably for daily batch inspection, test data matches ISO standard requirements precisely, and the intelligent test software is easy for our operators to master. Their after-sales team offers timely remote technical guidance whenever we have operational problems, spare parts supply is efficient. We have arranged a second bulk order for our new production workshop and will recommend Laibote’s testing machines to our industry partners across Europe.”

Middle East Construction Lab｜Purchase: Universal Electronic Testing Machine & Geotextile Test Equipment

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Southeast Asia Rubber & Polymer Factory｜Purchase: Vicat Softening Point & Tensile Testing Machine

From Tanaka Hiroshi, R&D Supervisor, Indonesia rubber materials enterprise

2026.06.05

★★★★★

“Laibote’s Vicat softening point tester and electronic tensile machine have been applied to our raw material incoming inspection and new formula development for over one year. High testing accuracy effectively controls our product defect rate. What impresses us most is their responsive after-sale service; technical staff reply our troubleshooting requests within 24 hours even for time zone differences. Compared with expensive European brands, Laibote’s equipment balances quality and price excellently, we plan to expand procurement of auxiliary testing instruments next quarter.”

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