. Commercial fisheries review. Fisheries; Fish trade. 14 COMWSRCIAL FISHEHISS REVIEW Vol. 11, No. 12 Five series of frozen pink salmon were thawed after six weeks of storage at 0° F. and canned in order to study the effect of freezing and storage on the canned product. The variables being considered included glazing, dressing or eviscerating, and freshness of the fish before freezing. -if- re -K- Seyeral lots of frozen lobsters and lobster meat were prepared for storage studies, â R- -K- -K- TECHNICAL NOTE NO. I - APPARATUS FOR WEIGHING AND TRANSFER OF MATERIALS In the determination of nitrog
. Commercial fisheries review. Fisheries; Fish trade. 14 COMWSRCIAL FISHEHISS REVIEW Vol. 11, No. 12 Five series of frozen pink salmon were thawed after six weeks of storage at 0° F. and canned in order to study the effect of freezing and storage on the canned product. The variables being considered included glazing, dressing or eviscerating, and freshness of the fish before freezing. -if- re -K- Seyeral lots of frozen lobsters and lobster meat were prepared for storage studies, â R- -K- -K- TECHNICAL NOTE NO. I - APPARATUS FOR WEIGHING AND TRANSFER OF MATERIALS In the determination of nitrogen in fish meal by the Kjeldahl method, transfer of the weighed material to the Kjeldahl flask without loss is difficult. This step can be simpli- fied by weighing the sample in a small glass cell and then transferring the cell with its contents to the Kjeldahl flask by means of a pair of tongs especially designed for that purpose. This method has been found to be especially satisfactory for use with other finely divided materials and for use with fish flesh and fish livers varying in consistency from near solid to liquid. The procedure need not be con- fined solely to use with Kjeldahl flasks, as the same technique can be Qiiployed in the transfer of precisely weighed quantities to containers of other types. The glass cells can be fashioned frcxn flat-bottom shell vials. For use with 500 ml, Kjeldahl flasks, vials with a diameter of frcm 18 to 22 mm, are convenient. Ordinarily, these vials as purchased are too long, but they may be cut and dressed to any convenient length - 20 to AO mm. will usually be satisfactory. When vola- tile materials are to be weighed, a cap can be made by using a second vial, cut to a suitable length, the inside diameter of which matches the outside diameter of the weighing cell. The tongs, which have an over- all length of 16 inches, can be fash- ioned from a medium-spring-steel ILLUSTRATION OF THE TONGS AND THEIR USE IN TRANS- FERRING A GLA
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