Abstract: An electrically-heated dry bath wherein a metal block having receptacles for receiving test tubes or the like has resistor heaters fixed thereto and a thermistor temperature sensor therein. A control circuit is provided which connects and disconnects electrical current to and from said heaters in response to the temperature sensor. The control current is fedback such as to eliminate a factor J(S) from the overall transfer function of the circuit, J(S) being a transfer function expressing how various thermal time constants in the bath would, unless neutralized, make the effective time constant of the controlled system deviate from the ideal on-off transfer function.

Abstract: A process for degrading and removing anionic and/or non-ionic surface active agents, detergents and the like from wastewater containing the same comprising treating wastewater containing the anionic and/or non-ionic surface active agents, detergents and like compounds with a novel microbial strain of Pseudomonas fluorescens under aerobic conditions; and the novel microorganism of the strain Pseudomonas fluorescens.

Abstract: A microscope slide having a raised marking surface formed of pigmented resinous material, such as an epoxy resin, which dries to a matte finish which is absorptive and retentive of marking ink.

Abstract: A portable medication dispensing unit has several compartments for storing pills or other forms of medicine. The dispensing unit is programmed with a medication schedule which causes visual and audio signals when it is time for the medication to be consumed. The medication schedule is optimized to accommodate the user's personal habits and to simplify taking two or more medicines. The programming means may be integral with the dispensing unit or a separate unit.

Abstract: An inert bead form polymer, of intermediate settling velocity between cation and anion exchange resins, which is dyed a highly visible color.

Abstract: A dental chair has its backrest connected to the seat by a scissor linkage arrangement which effects the moving together of the contiguous portions of the backrest and seat concurrently with movement of the backrest from an upright to a reclined position.

Abstract: Mutant microorganism, Pseudomonas putida CB-173 degrading phenolics, and at a temperature as low as, e.g., about 1.degree. to 4.degree. C., at a faster rate than known Pseudomonas putida type strains, and process for treating wastewater containing phenolics using the mutant microorganism strain Pseudomonas putida CB-173.

Abstract: The circular crystal of a temperature indicating instrument has a circular flange rotatable in a channel in the instruments' casing. Fingers on the casing have teeth which mesh with teeth on the flange. The fingers yieldably hold the crystal in place but the crystal can be forcibly rotated.The crystal has a slotted post thereon and on said post is a bimetallic spiral coil the inner end of which is in the post's slot. Another post in the casing covers the slot to keep the coil in place on the former post.On the back of the casing is a supporting bracket adjustable to several positions.

Abstract: A process of decolorizing pulp and paper mill wastewater comprising treating wastewater effluent from a pulp or paper mill with a novel microbial strain of Pseudomonas aeruginosa under aerobic conditions; and the novel microorganism of the strain Pseudomonas aeruginosa.

Abstract: A nonpermselective porous membrane sheet, which comprises a natural or synthetic fiber material substrate having coated thereon a mixture of a plastic binder material and a non-ion exchangeable filler material, said membrane being capable of transmitting negatively and positively charged ions between the electrodes in an electrodeposition painting operation and at the same time capable of preventing backflow of the electrolytes between the electrode chambers.

Abstract: A dental unit has dental instruments carried by individual nests, the nests being selectively movable from a storage position to a readiness position. Each nest is carried to the readiness position in a controlled manner such that the axis of the instrument becomes horizontal and moves downwardly as the instrument approaches the readiness position.

Abstract: An ion treatment electrode has a porous polymer substrate with a conductive coating. A non-conductive solution impervious border is provided by applying to adjacent substrate, sufficient heat and pressure to melt the polymer and disrupt the conductive coating.