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「Product Progress 」Compliance Upgrade · Precise Control & Peace of Mind | User Guide & Core Instrument Upgrade Announcement for DS Series Airborne Particle Counters

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07

2026-02

Company Spring Festival holiday notice

2026-02-07

The holiday time has been set, and no shipments will be made during the holiday. The service is online。

Company Spring Festival holiday notice
Company Spring Festival holiday notice

26

2022-03

Clean Room Classifications: What You Need to Know

2022-03-26

A clean room refers to a space with good airtightness that controls air cleanliness, temperature, humidity, pressure, noise and other parameters as needed   psb (15)   Cleanroom Classification   According to the flow state of airflow   According to the flow state of the airflow, there are mainly the following three types of clean rooms with airflow distribution [1]   (1) Non-unidirectional flow clean room: It is often called a turbulent clean room before, and the airflow in the room does not all flow in a single direction. Non-unidirectional flow clean rooms have several common characteristics: the terminal filter (high efficiency or sub-efficiency) is as close as possible to the clean room, it can be the air supply port or directly connected to the air supply port, or it can be connected to the air supply static plenum in the room. ; The return air outlets are located in the lower part of the clean room, in order to avoid the phenomenon of "ashing". There are eddy currents in non-unidirectional flow clean rooms, which are not suitable for clean rooms with high cleanliness, but should be used in clean rooms of class 6 to 9.   (2) One-way flow clean room: The air flow of one-way flow clean room is characterized by parallel streamlines, flowing in a single direction, and uniform wind speed on the cross section. There are vertical one-way clean rooms, quasi-vertical one-way flow, and horizontal one-way flow. Convective clean room, etc.   (3) Vector clean room: air is supplied at the upper corner of the room, using a fan-shaped high-efficiency filter, or an ordinary high-efficiency filter with a fan-shaped air outlet, and a return air outlet in the lower part of the other side, the height of the room is higher than normal It is appropriate to be between 0.5 and 1. This clean room can also achieve Class 5 (Class 100) cleanliness.   The flow pattern of the clean room is basically the above three types, but many forms can be evolved in practical applications. The clean room can be a mixed flow pattern combining unidirectional flow and non-unidirectional flow to achieve a high level of clean room in a localized area (unidirectional flow section). For example, a "tunnel" (one side is open) with horizontal unidirectional flow is set up in the clean room, and the rest of the clean room is a unidirectional flow pattern of eddy current, so that the "tunnel" part can achieve a cleanliness level of 5 or higher, and the workbench Right in the "tunnel".   By properties of controlled particles   (1) Industrial clean room: a clean room in which the controlled particles are non-biological particles such as dust.   (2) Biological clean room: a clean room in which the controlled particles are biological particles.

Clean Room Classifications: What You Need to Know
Clean Room Classifications: What You Need to Know

26

2022-03

Introduction of HJCLEAN Glove box

2022-03-26

Glove box is a closed system with inert gas protection and ultra-low leakage rate. It is widely used in new energy, lithium battery, vacuum deposition, laser welding, nuclear industry, laboratory and other industries. In terms of operation forms, there are single sided and double sided operation forms; From a structural perspective, there are integrated and split types; From a functional perspective, there are automatic control of gas pressure, automatic control of water and oxygen content, and automatic regeneration and reduction of purification columns; It has functions such as three-level user management, security prompts, judge and alarm, data storage, audit trail, and electronic signature. This device can be connected and integrated with different devices and accessories to achieve various process requirements.

Introduction of HJCLEAN Glove box
Introduction of HJCLEAN Glove box

26

2022-03

Introduction of HJ Clean FH series fume hood

2022-03-26

FH series fume hood is a special safety ventilation equipment that generates negative pressure and prevents the diffusion of toxic gases into the indoor background.It is equipped with an exhaust system,electromagnetic door interlocking system,aclosed system,a dedicated HMI(Human Machine Interface) and a cleaning and disinfection system.Widely used in pharmaceutical, medical, health, animal experiments, biosafety testing, laboratory and other places of ventilation and negative pressure protection.

Introduction of HJ Clean FH series fume hood
Introduction of HJ Clean FH series fume hood

26

2022-03

How to choose the main configuration of the clean bench

2022-03-26

The fan of the clean workbench should be a high-power, low-noise, low-vibration, long-life, and high-efficiency centrifugal motor. The wind speed can be adjusted in multiple levels, with digital display. An adjustable air volume fan system should be used. The light touch switch can adjust the voltage and the speed regulation performance is stable, and the wind speed in the working area can always be guaranteed to be in an ideal state under the state of the final resistance of the high-efficiency filter. The damper can arbitrarily adjust the pre-filtered air intake air volume. The top side air intake can be used to reduce the pollution of the filter fan caused by natural falling dust.   Steel plate paint vertical flow workbench-1   The clean workbench should include two parts, the intake filter and the exhaust filter. The intake and exhaust filters can be designed with three-stage air filtration, and the exhaust filter system must be equipped with an adsorbent filter device. The special filter ensures that the discharged air meets the national sanitation standard. The high-efficiency air filtration system with pre-filter is adopted, with stable and reliable performance, ensuring that the working area is a sterile environment and preventing edge leakage. The high-efficiency filter system can be made of steel material covered with epoxy resin, with a spring washer, so that the pressure is evenly distributed on the entire high-efficiency filter to ensure the effective sealing of the high-efficiency filter.   The lighting of the clean workbench can be equipped with fluorescent lamps in and outside the operation area, and sterilization ultraviolet lamps should be equipped in the work area.   The alarm system of the clean workbench is equipped with an air flow detection alarm device, which can be seen or heard. It can monitor the air flow speed at the entrance of the work area at any time to ensure safety.   The pressure gauge of the clean workbench should clearly indicate the pressure difference on both sides of the high-efficiency filter, and keep abreast of the resistance change of the high-efficiency filter, so as to remind the replacement of the high-efficiency filter.

How to choose the main configuration of the clean bench
How to choose the main configuration of the clean bench

26

2022-03

Clean laminar flow hood

2022-03-26

Clean laminar flow hood(laminarflowhood,downflow )is averticalone-way flow,dust-free and sterile purification equipment that providesalocal class-A environment,It is widely used in the pharmace utical industry to create ClassA dedicated cleaning equipment in low-level clean environments.

Clean laminar flow hood
Clean laminar flow hood

SUZHOU HJCLEAN TECH Co., LTD

Address: No. 99, Weixin Road, Suzhou Industrial Park, Wuzhong District

Service hotline：18914004723

Contact email：market@hjclean.com

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