On August 12, 1937, OGAWA Company was founded by Ringo Ogawa in Osaka, Japan. The initial mission of the company was to introduce imported rice and cotton into the Japanese domestic market. In 1978, they founded a company (Ltd.), and the then president Hiroshi Ogawa, an engineering graduate from Otaru University, reignited his interest in researching workplace air quality in Japan.

At that time, as now, most monitoring was done using real-time monitoring, which was expensive and unreliable due to its reliance on complex equipment with constant power supply.

At that time, as now, most gas monitoring was done using real-time monitoring, which was expensive and unreliable due to its reliance on complex equipment with a constant power source.

Due to the fact that the OGAWA passive sampler was originally designed to simultaneously sample NO-NO2-NOx, it is one of the * devices that can passively read NO concentration.

In 1988, D.R. Schaeffer and H Ogawa co founded Ogawa&Co, USA, Inc., and brought the sampler to the United States. The OGAWA passive sampler solution works very well at Petros at the Harvard School of Public Health of the Environmental Protection Agency, and the device has its own lifecycle as a Harvard ozone passive sampler.

Today, OGAWA passive samplers are being used worldwide for the collection of NO-NO2, NOX, SO2, O3, and NH3. It can be used as a personal sampler or for micro environmental outdoor projects. It has a protective cover against wind and moisture. Due to the fact that the consumables exposed each time are pre treated absorbent pads, the OGAWA passive sampler is one of the lowest cost devices for precise monitoring of large cities and rural areas. Its service life is measured in years and countless exposures.

The OGAWA passive sampler is an ideal low-cost air monitoring sampler suitable for personal, outdoor, and indoor use. The use of OGAWA passive sampler is the only known method for simultaneously monitoring NO&NO2. The PS-100 sampler can be reused countless times. Only preprocessed absorbent pads are consumables.

OGAWA passive samplerThe PS-100 is now equipped with a new and improved spiral top, which is very easy to assemble:

Combined with different pre treated absorbent pads,OGAWA passive samplerThe following gases can be sampled:

• SO₂
• NH₃
• NO
• NO₂
• NO_x
• O₃

_​Of course, we also provide blank absorbent pads, which you can preprocess yourself.