Apex Instruments, Inc. products

Medium porosity, 34 x 100 mm, round bottom, fits SFA-300, use additional O-ring (O-123V) Ceramic thimbles do not meet the EPA regulatory standard of 99.95 retention for Methods 5 and 17.

Apex Instruments stocks a variety of fiber thimbles for in-stack particulate sampling. The thimbles are seamless, high purity filters, and available in two different fiber types: borosilicate glass and quartz. Borosilicate glass fiber thimbles are acid-washed to reduce the trace metal content to an absolute minimum. The quartz fiber thimbles are strengthened with alumina and are pre-fired at 900°C for 2 hours during manufacturing to stabilize the weight prior to use. The gas collection efficiency of the thimbles is 99.95% (0.3 micron DOP). The 25×90 mm thimbles are specially manufactured for stack sampling and tapered for easy loading. Cellulose thimbles are available upon request.

Apex Instruments stocks a variety of fiber thimbles for in-stack particulate sampling. The thimbles are seamless, high purity filters, and available in two different fiber types: borosilicate glass and quartz. Borosilicate glass fiber thimbles are acid-washed to reduce the trace metal content to an absolute minimum. The quartz fiber thimbles are strengthened with alumina and are pre-fired at 900°C for 2 hours during manufacturing to stabilize the weight prior to use. The gas collection efficiency of the thimbles is 99.95% (0.3 micron DOP). The 25×90 mm thimbles are specially manufactured for stack sampling and tapered for easy loading. Cellulose thimbles are available upon request.

Apex Instruments stocks a variety of fiber thimbles for in-stack particulate sampling. The thimbles are seamless, high purity filters, and available in two different fiber types: borosilicate glass and quartz. Borosilicate glass fiber thimbles are acid-washed to reduce the trace metal content to an absolute minimum. The quartz fiber thimbles are strengthened with alumina and are pre-fired at 900°C for 2 hours during manufacturing to stabilize the weight prior to use. The gas collection efficiency of the thimbles is 99.95% (0.3 micron DOP). The 25×90 mm thimbles are specially manufactured for stack sampling and tapered for easy loading. Cellulose thimbles are available upon request.

The GFA-2590K in-stack thimble holder kit includes a selection of the seven most commonly used nozzle inserts, ranging from 1/8-inch to 1/2-inch, and one housing. The entire kit is conveniently packaged in a foam-lined carrying case for protection. The thimble holder connects directly to the end of the probe with a 5/8-inch tube union. One metal taper clip is included in the kit.