Laoshing 2050 dual-channel ambient air sampler with constant-flow sampling for gaseous pollutants and particulate monitoring.
Overview
The Laoshing 2050 is a portable dual-channel ambient-air sampler from Qingdao Laoshing Haina Optoelectronic Environmental Group. It features 24-hour constant-temperature constant-flow sampling with a built-in diaphragm pump, electronic flow meter and rechargeable battery, in a compact lightweight body for field use. Two independent channels collect gas-phase samples (SO, NOx, etc.) or aerosol/particulate samples simultaneously, with stable flow and automatic accumulated volume. Widely used by environmental, health, labor, safety, military, research and education organisations for routine and emergency monitoring of particulates, gaseous pollutants and aerosols, meeting standards such as HJ/T 194 and GB/T 15432.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Type | 24-h constant-temp constant-flow gas sampler |
| Structure | dual-channel gas sampler |
| Flow range | 0–1 L/min (gas channel) |
| Pump pressure | approx. 20 kPa |
| Flow stability | ≤5% |
| Flow meter accuracy | ≤±2% |
| Sampling | constant temp/flow, auto cumulative volume |
| Targets | gaseous pollutants (SO₂, NOx, etc.), aerosol, particulates |
| Power | built-in rechargeable Li battery, portable |
| Display/control | LCD, key-pad |
| Standards | HJ/T 194, GB/T 15432, etc. |
| Applications | environmental, health, safety, research, education |
Standards
GB/T, JTG, ASTM
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Spare parts kit
FAQ
Q1: What standards does the Laoshing 2050 Ambient Air Sampler comply with?
A1: The Laoshing 2050 Ambient Air Sampler is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the Laoshing 2050 Ambient Air Sampler be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
Overview
The Laoshing 2050 is a portable dual-channel ambient-air sampler from Qingdao Laoshing Haina Optoelectronic Environmental Group. It features 24-hour constant-temperature constant-flow sampling with a built-in diaphragm pump, electronic flow meter and rechargeable battery, in a compact lightweight body for field use. Two independent channels collect gas-phase samples (SO, NOx, etc.) or aerosol/particulate samples simultaneously, with stable flow and automatic accumulated volume. Widely used by environmental, health, labor, safety, military, research and education organisations for routine and emergency monitoring of particulates, gaseous pollutants and aerosols, meeting standards such as HJ/T 194 and GB/T 15432.
Applications
• Road and highway engineering laboratory testing
• Construction material quality control and acceptance
• Research and teaching laboratories
• Third-party inspection and certification bodies
Features
• Robust construction suitable for both laboratory and field use
• Compliant with relevant Chinese and international testing standards
• Complete with calibration certificate and operation manual
Technical Specifications
| Item | Specification |
| Type | 24-h constant-temp constant-flow gas sampler |
| Structure | dual-channel gas sampler |
| Flow range | 0–1 L/min (gas channel) |
| Pump pressure | approx. 20 kPa |
| Flow stability | ≤5% |
| Flow meter accuracy | ≤±2% |
| Sampling | constant temp/flow, auto cumulative volume |
| Targets | gaseous pollutants (SO₂, NOx, etc.), aerosol, particulates |
| Power | built-in rechargeable Li battery, portable |
| Display/control | LCD, key-pad |
| Standards | HJ/T 194, GB/T 15432, etc. |
| Applications | environmental, health, safety, research, education |
Standards
GB/T, JTG, ASTM
Standard Delivery
• Main instrument unit
• Power cable
• Operation manual
• Spare parts kit
FAQ
Q1: What standards does the Laoshing 2050 Ambient Air Sampler comply with?
A1: The Laoshing 2050 Ambient Air Sampler is designed and manufactured in accordance with relevant Chinese national (GB) and transport industry (JTG) standards, as well as applicable ASTM and AASHTO international standards. A calibration certificate traceable to national standards is provided with each unit.
Q2: How often should the Laoshing 2050 Ambient Air Sampler be calibrated?
A2: We recommend annual calibration by authorized technicians or by iRoad after-sales service center. For high-frequency laboratory use, semi-annual calibration is advised. The instrument is supplied with a factory calibration certificate.
Q3: What is the lead time and do you provide training?
A3: Standard units are usually shipped within 7-15 working days. Custom configurations may require 20-30 days. iRoad provides on-site installation, commissioning and operator training for major equipment; remote video guidance is available for standard laboratory instruments.
