The amount of silica gel recommended for RH stabilization for a “typical” microclimate application uses an average MH value of 5.0 within the overall range of 0-60% RH.

 

• Arten Gel's MH Value is approximately 5.0 at or below 40% RH. Arten Gel should not be used in applications that are consistently above 45% RH. 

• Above 40-45% RH, the MH value of Arten Gel decreases since a larger quantity would be required to provide the same buffering capability as Rhapid Gel. 

• Rhapid Gel's MH Value is approximately 5.0 within the overall range of 0-60% RH.

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Since the same MH Value is used throughout the overall range of 0-65% RH, there is no need to recommend different quantities of Rhapid Gel and Arten Gel within this wide RH range. This assumes that Arten Gel is not used above 45% RH for a prolonged period of time.

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• Less Rhapid Gel or Arten Gel can be used for very air-tight cases or for shorter periods on exhibition. 

• If a more precise calculation is utilized to determine the amount of Rhapid Gel required for a specific application, the MH values provided in the section on Determining the M and MH value for Silica Gel can be used.