1. (a) The maintenance tolerances for Motomco 919 moisture meters used in performing official inspection services shall be:

   1. (1) Headquarters standard meters:

      Moisture range	Tolerance
      Direct comparison	Sample exchange
      Low	±0.05 percent moisture, mean deviation from National standard moisture meter using Hard Red Winter wheat
      Mid	±0.05 percent moisture, mean deviation from National standard moisture meter using Hard Red Winter wheat
      High	±0.05 percent moisture, mean deviation from National standard moisture meter using Hard Red Winter wheat

   2. (2) All other than Headquarters standard meters:

      Moisture range	Tolerance
      Direct comparison	Sample exchange
      Low	±0.15 percent moisture, mean deviation from standard moisture meter using Hard Red Winter wheat	±0.20 percent moisture, mean deviation from standard moisture meter using Hard Red Winter wheat
      Mid	±0.10 percent moisture, mean deviation from standard moisture meter using Hard Red Winter wheat	±0.15 percent moisture, mean deviation from standard moisture meter using Hard Red Winter wheat
      High	±0.15 percent moisture, mean deviation from standard moisture meter using Hard Red Winter wheat	±0.20 percent moisture, mean deviation from standard moisture meter using Hard Red Winter wheat

2. (b) The maintenance tolerances for GAC 2100 moisture meters used in performing official inspection services shall be:

   1. (1) Headquarters standard meters. By direct comparison using mid-range Hard Red Winter wheat, ±0.05% mean deviation for the average of the Headquarters standard moisture meters.
   2. (2) All other than Headquarters standard meters. By sample exchange using mid-range Hard Red Winter wheat, ±0.15% mean deviation from the standard meter.

[63 FR 34554, June 25, 1998]