A Simplified Technique for the Agar Cup Assay of Penicillin

A Simplified Technique for the Agar Cup Assay of Penicillin.

Studies with the Agar Cup-Plate Method: I. A Standardized Agar Cup-Plate Technique.

Official Circular 198 (Ruehle and Brewer, 1931) gives directions for performing the agar cup-plate test. However, in the limited literature dealing with the subject, no mention is made of the influence of varying the volume of agar, the amount of inoculum, the hydrogen ion concentration or other factors. In the course of other studies with the agar cup-plate method (Rose and Miller, 1939; Mille...

The agar-rope technique for estimating penicillin in liquids.

Many methods for the estimation of penicillin have been published. Although chemical and physical methods may be used for its estimation in fairly pure preparations, in crude liquids and in low concentration the biological test is still necessary. The following method is described because it can be carried out in a small clinical laboratory without special equipment and without the necessity of...

investigating the feasibility of a proposed model for geometric design of deployable arch structures

deployable scissor type structures are composed of the so-called scissor-like elements (sles), which are connected to each other at an intermediate point through a pivotal connection and allow them to be folded into a compact bundle for storage or transport. several sles are connected to each other in order to form units with regular polygonal plan views. the sides and radii of the polygons are...

A method for the assay of penicillin.