The plastic tubing we ship with the Gas Pressure Sensor (GPS-BTA) and the Go Direct® Gas Pressure Sensor (GDX-GP) can be purchased from us: Plastic Tubing (PS-TUBING)
Its inside diameter is 1/8 in and wall thickness is 1/16 in...
The internal volume of the current Gas Pressure Sensor is approximately 0.8 mL.
The internal volume of the older style (pre-2005) Pressure Sensor is about 1 mL, but the exact answer depends on the length of tubing connected. Here is a way to test...
Yes, all of the individual parts found in the Pressure Sensor Accessories Kit (included with each Gas Pressure Sensor) can be ordered as separate pieces, using this order information:
Luer-Lock Connector (PS-LUER)
Plastic 2-Way Valve (PS-2WAY)
...
PGC Scientific in Gaithersburg, Maryland, about $130 per dozen. The 10-mL syringe with the Luer Lock connector.
Aldrich Chemical also sells the "Perfectum" syringes, which were used in the February 2006 Americal Journal of Physics article....