Internal And External Filter - China

Standards

ISO 10526 (Standard illuminants for colorimetry, e.g., D65, A light sources)

ASTM E1164 (Practice for obtaining spectrophotometric data for object-color evaluation)

MIL-STD-810G (Environmental engineering considerations for military equipment, including filtration)

IEC 60529 (IP ratings for dust/water resistance in external air filters)

NSF/ANSI 42 & 53 (Standards for drinking water treatment filters)

Main Parameters

Parameter Internal Filters External Filters

Application Optical instruments, cameras, displays HVAC systems, water treatment, light sources

Mounting Integrated into device housing Removable cartridges, cassettes, or frames

Spectral Range Narrow bands (e.g., UV-cut, IR-pass) Broad or customizable (e.g., HEPA, UV sterilization)

Lifespan 500–10, 000 hours (dependent on material) 3–12 months (water/air filters)

Maintenance Minimal (factory-replaced) User-replaceable cartridges

Pressure Drop Negligible (no airflow restriction) Varies (e.g., 0.1–2.0 inches H₂O for air filters)

Company Contact:

• Posted By: Standard International Group (HK) Limited

• Phone: 18355172336

• Address: No.2578 Gu Dai road, Min Hang district, Shanghai, shanghai , Shanghaai , China

• Email:

• Website: https://www.standard-groups.com/en/

• Business Description: Standard Groups is an integrated supplier specialized in providing material test instruments and “The Whole Laboratory Program” solutions.
  
  The main products cover many areas: Textile and Apparel, Leather and Footwear, Flammability Testing, Filter Material Testing, Automotive Interior, Toy Testing, Non-woven and Geo-membrane, Carpet Testing, Luggage/Furniture/Office Furniture Testing, Material and Parts of Automotive, Weathering and Light Stability Testing, Ovens and Environmental Testing Chambers, Salt Fog Chambers, Materials Testing Machines, 3D Body Scanning and Manikin, Air Quality Monitoring and Measurement, Package Material Testing, Electrical Safety Testing, Optical and Spectroscopy Instruments, Lighting and Color Assessment, Microscopy and Legal Inspection, and relative testing services.