When told that CSC Scientific does not calibrate Bostwick Consistometers, people ask . “Then how can I calibrate my consistometer and where can I get a calibration standard?”.
We recommend sampling the selected
This process will set a standard or an expected result for a perfect product. From this baseline, acceptable limits should be set by time. For example, a reading of 16 in 85 seconds might be the standard for a perfect product at 30° C. Acceptable variations can range from a reading of 16 in 81 seconds to a reading of 16 in 89 seconds. Again, the product temperature should be 30° C.
A similar
This table shows typical standards and acceptable limits for three hypothetical products:
|
Marbleized A |
Syrup C |
Mission 5 |
---|---|---|---|
Product Temperature |
30°C |
42° C |
50°C |
Distance Standard |
16 |
17.5 |
15 |
Time Standard |
85 Seconds |
58 Seconds |
42 Seconds |
Allowable + Time |
81 Seconds |
62 Seconds |
46 Seconds |
Allowable - Time |
89 Seconds |
55 Seconds |
40 Seconds |
We have had frequent
The critical issue in consistent and repeatable CSC Bostwick Consistometer operation is in the set-up. Leveling the trough is the principal requirement for getting repeatable results on a sample at a fixed temperature.
Establishing and recording Bostwick results on the perfect or quality control standard
Sorry to have to carry this message. You have to do your own calibration for each of your products.
I hope this was helpful to you. Please share this with everyone who needs to know.
As always a perplexed,
Art
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