![]() ![]() (See "Care of Cup" for orifice removal instructions.) Positive orifice identification is assisted by "steps" at the base of the orifice as shown in the cross section drawing. The orifices for the cup are machined from stainless steel with the exact conical exterior to match the opening in the base of the cup. For convenience and for best possible results, however, it is recommended that such interchanges be held to a minimum. Orifice Interchange (not applicable to certified cups) - Production tolerance on the Gardco Standard ISO cup, the Gardco/ISO Mini Dip Cup and the orifice, whether it be 3mm, 4mm, or 6mm, is sufficiently close to permit interchange of orifices in any one cup or between cups. This reduces errors due to possible temperature change imposed by the cup.Ī horizontal ledge existing at the top of the orifice in earlier cups has been eliminated.Įxterior cup dimensions are chosen to fit existing support stands for the Gardco Ford Cup series. The cup has been greatly reduced in weight by removal of excess metal on the lower portion of the cup adjacent to the orifice. ![]() The GARDCO/ISO viscosity cup is machined from solid aluminum bar stock with removable stainless steel orifices. Standard Cup with: 3mm, 4mm, 6mm and 8mm OrificesĬonversion formulas & table relating efflux time in seconds, to the nearest tenth second, to viscosity in centistokes are furnished with each GARDCO/ISO viscosity cup.Ĭalibration of the GARDCO/ISO cup is traceable to the National Institute of Standards and Technology. Mini Dip Cup with: 3mm, 4mm & 6mm Orifices ![]()
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