System Requirements
A source
of clean dry pulse-free compressed air at a pressure of 12-15 psi is
essential for the Model 410 Flame Photometer. Sherwood recommends the
Model 851 Compressor. For areas of high temperature and humidity the Model
855 incorporating a moisture trap is available as an accessory.
The Model 410 Flame Photometer will run on Butane, Propane, or a
mixture of the two, and Natural gas. A Primary Regulator at the gas source
is required and can be supplied by Sherwood. The secondary regulator is
built-in to the Model 410 Flame Photometer
The Sherwood Advantage
- 45 years of design expertise in Flame Photometry
- Sherwood Air Compressors and Diluter gives operator- independent
reliability of results
- Application expertise, Method library and "Guide to Flame
Photometry"
Specification of the Model 410 Flame Photometer:
- Sensitivity : To display minimum of 100 units, Na <0.5
ppm, K <0.5 ppm, Li 5 ppm, Ca 5 ppm, Ba 200 ppm
- Specificity: For Na, K, Li interference is less than 0.5% of
the concentration of Na, K, Li, Ca or Ba, equal to the concentration
under analysis
- Linearity: Better than 2% mid range with Na=3ppm, K=3ppm, or
Li=5ppm
- Drift: ( To be measured after 30 mins warm up): Zero Drift
better than 2% per hour when calibrated with Na=10ppm
- Reproducibility:< 1 % CV from the same Bulk sample for 20
determinations at Na and K=10ppm .
- Limit of Detection: <20 ppb Na and K
- Time to Stability: Aspirate for 20 secs.
- Aspiration Rate: Variable 2-6 mls /min
