c. Boring or Piercing Instrument. This instrument is used to make a hole in
both frozen and solid chilled products when taking the internal temperature. The hole
prevents damage to the thermometer. The instrument may be an ice pick, or a drill bit.
d. Thermometers. These are used to determine the internal and external
temperature of products and the opening temperature of carriers. They must be durable,
easily sanitized, and kept in excellent condition.
(1) Metal dial. This is a hermetically sealed dial thermometer that has a
pointed stem approximately 5 inches (125mm) long. The dial face is glass and the
remainder is corrosion-resistant stainless steel. It measures temperatures from 0 to
250F (-18 to 105C), and has an accuracy of + 2F.
Always recalibrate this thermometer after a discrepancy is found, take another
temperature and then make a recommendation.
(2) Electronic digital. This thermometer is a hand held device and has
different attachments. It can be used for hot and cold liquid or solid products. It provides
the current, actual temperature in an easily readable form.
(3) Laser. This thermometer measures the surface temperature of a product
and is used to detect a number of temperatures rapidly. However, it should not be used to
make final recommendations. If a discrepancy is found, use a calibrated Metal dial
thermometer to make final deposition.