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who says Stoppers can't be improved?
Look at this fin ish! The uniform smoothness of this stopper re sults from brand new molds and equipment.
Research gave it greater rubber formulation. Result: It is softer, more re· s i i i e n t ; seals better.
And it's safer. Resilience makes it easy to use with glass tubing, prevents break age and freezing.
The softer bounce of more rubber provides resist ance to set and deformation. It's non-blooming.
It's longer last ing, too — has longer shelf-life with minor (if any) change in hardness.
Illustrated is our basic BLACK RUBBER stopper (#M29). This stopper answers the bulk of laboratory requirements, at low cost. Yet even here, MP quality has evolved a superior stopper. Consider the improvements in other grades: Isoprene PURE GUM (#M18) that floats; sulphur-free GREEN NEOPRENE (#M35) that resists 150° C temperatures! All come in your choice of solid, one-hole and two-hole types. All are packaged in fifty-pound bulk, five-pound box, and one-pound poly bags. Choose the most convenient combination for your own needs. MP stoppers are available now at your laboratory supply house — part of an exciting, growing line of educational, industrial, and pharmaceutical products. Z A The MP triangle molded on top is your sign of a superior stopper. You can trust the triangle.
molded products
DIVISION: EASTHAMPTON RUBBER THREAD CO. EASTHAMPTON, MASS. · AREA CODE 413 527-2436
Circle No. 90 on Readers' Service Card -Circle No. 83 on Readers' Service Card
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