LACO has been a trusted and accredited provider of calibrated open-style leak standards since 1998. With over 26,000 CalMaster leak standards manufactured, we have the experience and technology to ensure your leak testing success. Our open-style leak standards utilize micro-tube capillary technology and stand as the foremost leader in the industry for its unparalleled stability and reliability.
NIST-traceable calibration services backed by A2LA-accredited calibration lab (ISO 17025:2017, ANSI/NCSL Z540-1-1994) and an ISO 9001:2015 certified quality system.
| Leak Element | Micro tube capillary |
|---|---|
| Gas Options | Any gas, primarily helium |
| Leak Rate Range | 1e -10 to 1e-2 atm*cc/sec |
| Calibration Points | 1 to 5 points |
| Isolation Valve | Solenoid valve, 24 VDC, Brass |
| Outlet Connection Options | No Connection, NPT 1/8” male, NPT 1/4” male |
| Inlet Connection Options | NW16 flange, NW25 flange, NW40 flange, NPT 1/8” male, NPT 1/4” male, NPT 1/8” female, NPT 1/4” female, Strait thread M8 male, Strait thread 10-32 male, Swagelok 1/4” |
| Exhaust | Into Vacuum |
| Other Options | Pressure Gauge |
| Inlet Pressure Options | Specified value, up to 5 digits |
| Inlet Pressure Unit Options | psig, Torr, mBar |
| Gas Concentration & Flow Options | 10% to 100% |
| Flow Options | Total Flow, Partial Flow |
| Calibration Tolerance Options | Standard tolerance (+/- 1.0 of mantissa). Precision tolerance (+/- 10% of nominal), High precision tolerance (+/- 2% available on helium only) |
