SC-FT-1406DH Overcomes Limitations of Filter Media Testing in China

During the COVID-19 period, many brands of testing equipment for masks and meltblown materials appeared on the Chinese market. Although much of this equipment is now obsolete, some are still occasionally used for air filter media testing.

A common issue identified is that when test results exceed 99.99%, they are significantly higher than those obtained with the authoritative TSI 8130. Domestic machines often report higher efficiencies in the high-efficiency range and lower efficiencies in the low-efficiency range.

SCINCE, the leading manufacturer of filter media testing equipment in China by market share, offers the SC-FT-1406DH model, which is highly regarded for its test stability, equipment durability, and accuracy comparable to the TSI 8130.

Many domestic filter media testers use a different principle compared to the TSI 8130. The TSI 8130 employs a generator to produce aerosolized particles with a size of 0.3µm at various concentrations, and a photometer to measure the aerosol concentration, achieving accurate 0.3µm filtration efficiency. In contrast, domestic testers often rely on a single particle counter with a minimum detectable particle size of 0.3µm, resulting in inconsistent results.

According to SCINCE, the limitation in measuring filtration efficiencies above 99.99% is due to the particle counters measuring too few downstream particles when testing high-efficiency filter media, leading to fluctuations that significantly impact results. To address this issue, SCINCE has developed the SC-FT-1406DH Filter Media Tester. Unlike traditional testers, the SC-FT-1406DH uses much more highly accurate particle counters and higher aerosol concentrations, achieving precise testing with efficiencies as high as 99.9999%@0.3µm. This level of accuracy surpasses even the TSI 8130, ensuring reliable quality control for high-efficiency filters like H14.