F-900 Instruction Manual 8/14/2017
1554 NE 3
rd
Ave, Camas, WA 98607, USA Phone: (360) 833-8835
22
www.felixinstruments.com
expected, their expected concentrations must be subtracted from the reported ethylene
concentration.
Equation 1:
0.025 𝑝𝑝𝑚𝑣 ≤
𝐼𝑛𝑗𝑒𝑐𝑡𝑖𝑜𝑛 𝑉𝑜𝑙𝑢𝑚𝑒∗𝐸𝑥𝑝𝑒𝑐𝑡𝑒𝑑 𝐸𝑡ℎ𝑦𝑙𝑒𝑛𝑒 𝐶𝑜𝑛𝑐𝑒𝑛𝑡𝑟𝑎𝑡𝑖𝑜𝑛
30𝑚𝐿
≤ 20 𝑝𝑝𝑚𝑣
Exceeding the lower limit of Equation 1 will decrease the accuracy and precision of the result.
Exceeding the upper limit will affect the sensitivity of the instrument and will cause the
instrument to under-estimate measurements.
Each injection should be done by the same technician, as human technique will alter the result.
GC Emulation Mode Tips
In general, higher injection volume will also increase signal detection. Recommended
minimum injection volume is
5 ml
.
The F-900 requires about 5-10 minutes of warm-up time when using GC Emulation
Mode.
When using GC Emulation Mode, the protocol is to perform 1 injection per sample, which takes
approximately 5 minutes:
1. Stabilization time
2. Sample injection (at least 10 mL)
3. Processing time
Note:
Injection mode standard error (at two sigma) is ±10% of gas concentration.
GC Emulation Mode Operation Procedure
1. Turn on GC Emulation Mode in the Setup>Measure menu. Press
Save
to save changes
and exit to the main menu.
2. Enter the main Measure menu, Setup injection port then press Enter
Mode GC Emulation
Setup injection port
then press enter
Summary of Contents for F-900
Page 2: ......
