Why must the instrument be at room temperature (about 20°C) before performing a crude fiber or acid detergent fiber procedure?

During a crude fiber or acid detergent procedure, the time frame during which samples are exposed to 100°C solution(s) is extremely important. If the Fiber Analyzer begins a procedure at a temperature higher than 20°C, the instrument will heat the solution too quickly and the effective digestion time frame will be too long. This will create lower-than-expected fiber values. 

As a result, when performing back-to-back fiber runs with the second being a crude fiber or acid detergent procedure, we suggest pouring cold water into the vessel before the second run to cool the instrument to room temperature.