Abstract: A petroleum alcohol test kit and a method of testing petroleum for alcohol content both as to volume and type. The volume of alcohol present is determined by mixing a petroleum sample with a first colorimetric solution whereby the volume of alcohol can be visually determined. The type of alcohol present is determined by mixing the components of a second colorimetric solution for impregnation of a visual indicator. A petroleum sample is mixed with an acidified potassium permanganate solution and the resultant vapors contact the visual indicator whereby the color the indicator turns is indicative of the type of alcohol present. The kit has the necessary containers, support and solutions to carry out the testing.

Abstract: This invention relates to a novel method for separating and measuring the amount of polar compounds, such as pyridostigmine, acetylcholine, neostigmine, and edrophonium, and their metabolites in aqueous solutions. The method is used to determine the urinary excretion and plasma levels of polar compounds administered to animals.

Abstract: A kit containing three tablets is used in a process for testing for formaldehyde and/or glutaraldehyde in a sensitive, rapid, and simple manner that is practical even when glucose is present. A first tablet containing citrus acid and glycine hydrochloride (or like buffer and strong acid, respectively) is placed in the test solution (suspected to contain formaldehyde and/or glutaraldehyde) with a tablet containing the necessary reagents for developing color. These reagents include benzoylacetone or its derivatives, and ammonium acetate. A third tablet containing effervescing material is added, causing mixing of the solution. The third tablet typically is composed of sodium hydroxide and potassium carbonate. The yellow color (if formaldehyde and/or glutaraldehyde are present) produced by the reaction is compared to colors on a color chart, and thereby the approximate amount of formaldehyde and/or glutaraldehyde present may be determined.

Abstract: A process is provided for the analysis of additives in polyolefins involving dissolving the polyolefin in decalin and subsequently precipitating the polymer, isolating a portion of the extract and measuring the additives therein. Apparatus for use in the process are also disclosed.

Abstract: A device for preparing a control solution for ketone analysis is disclosed, as well as a method for preparing it. The device comprises a carrier vehicle incorporated with an ester of a .beta.-ketoalkanoic acid, and a hydrolyzing substance capable of converting the ester to the corresponding .beta.-ketoalkanoic acid. The ester has the structure ##STR1## in which R is a lower alkyl group and R' is an aliphatic or cyclic group having 1 to about 7 carbon atoms. The method comprises contacting a predetermined volume of solvent with the device.

Abstract: An indicator capable of determining whether the concentration of a disinfectant/sterilant solution of glutaraldehyde exceeds a predetermined value comprising an indicator medium impregnated with a sulfite compound and an amino acid or an ammonium salt.

Abstract: A composition, device and method for preparing a ketone control solution are disclosed. The composition comprises dimethylformamide and a Group I, II or III metal salt of a .beta.-keto acid ester. The salt has the structure ##STR1## in which R is lower alkyl of 1 to 6 carbon atoms, R' is an aliphatic or cyclic group having 1 to about 7 carbon atoms, M is a Group I, II or III metal ion and n is 1, 2 or 3. A carrier matrix incorporated with the composition can be affixed to a support member to form the device. Preferably, a hydrolyzing agent is included on the device in the same or another carrier matrix. The method for preparing the control solution comprises contacting a predetermined volume of an aqueous solution with the device for a predetermined time.

Abstract: A transparent glass detection tube contains a bed of silica gel which has been impregnated with sulfuric acid. One end of the tube is open to the outside air while the other end is connected to a sampling pump. Outside air is drawn through the tube and aldehydes and moisture in the air are separated and adsorbed on sequential lengthwise portions of the gel bed. At the end of the sampling period, xylene vapors are drawn through the silica gel forming a brownish tint stain on that portion of the bed that has adsorbed aldehydes. The length of the stain is a measure of the amount of aldehydes present in the air sample, i.e. the dosage exposure to aldehydes during the sampling period.

Abstract: A process and kit which are useful in determining whether the concentration of an aldehyde in a sample is in excess of a predetermined concentration. Two reaction systems are employed. The first reaction system acts first in transforming quantitatively to a first reaction product the amount of aldehyde equal to the predetermined concentration. The second reaction system then acts to transform any remaining aldehyde to a second reaction product which is detectable visually. In a preferred embodiment, delay in action of the second reaction system is achieved by formulating a reactant for the second reaction system in tablet form. Such tablets are also described herein.

Abstract: A composition, test means, method of making test means and process for the detection of ketone bodies in human fluids. The composition includes a chromogen and, discrete therefrom, a combination of a metal salt, a primary amine and a chelator for the metal. The composition may be in tablet form or in separately sequentially impregnated layers on a carrier. If the composition is in tablet form, the composition is a dry combination of the chromogen, the metal salt, primary amine acid and the chelator. If the test means is formed on a carrier as separately impregnated layers, the chromogen is impregnated onto the carrier, the impregnated carrier is then dried, and then the combination of the primary amine, metal salt and chelator in liquid form are impregnated over the dry chromogen and thereafter the impregnated carrier is dried.

Abstract: A sensing apparatus and method for qualitatively and quantitatively analyzing small amounts of selected oxidizable gases in a carrier gas including the associated electronic circuitry is described. The apparatus preferably includes two semi-conductor type sensing elements in electrical parallel so that the difference in resistance of the two sensors can be detected, which can be of the N or P type and which decrease or increase in electrical resistance as a function of the concentration of an oxidizable gas. Also, a method for determining fruit maturity and ripeness by the detection of ethylene in the internal atmosphere of a fruit is described which preferably uses the apparatus with the semi-conductor type sensing elements, but can use other variable resistance type gas sensing means.

Abstract: Diagnostic agents containing sodium nitroprusside are storage-stabilized by the presence of a compound having one of the formulas ##STR1## a cyclic compound of the formula ##STR2## wherein each A has the formula ##STR3## wherein X and Y are oxygen or sulfur and Z is oxygen, sulfur, or NH.

Abstract: Method and test system for monitoring the status of control of ketoacidosis-prone diabetics using pseudo-kinetic methods. Pseudo-kinetic clinical information is obtained by analysis of a single blood sample in which the blood glucose level is determined along with one or more additional indicator analytes present in patient blood, serum or plasma. The additional indicator analyte(s) provide a "historical" picture of recent events within the patient relating to glucose metabolism which, when analyzed in conjunction with the blood glucose level, provides, from a single sample, a holistic view of the degree of metabollic control in the diabetic patient which is otherwise obtainable at the present time only by the much less desirable process of drawing and analyzing multiple samples over a period of time. The additional indicator analyte may be ketone bodies.

Abstract: Boar taint in individual carcasses of uncastrated boars or parts thereof is determined in a fast and simple manner by determining IR-spectrophotometrical transmission data for the individual carcass or part or preferably on a sample from the carcass or part, and comparing the spectral data registered with corresponding data having a statistical relationship to boar taint. A suitable determination is determination of the ratio between the absorptions at two different wave lengths in the range of 1275-1325 cm.sup.-1 in the IR spectrum of the fat sample. A still higher correlation between the particular spectral data and the organoleptic data is obtained when one or more further parameters with statistical correlation to the odor image is/are included, e.g., the concentration of unsaturated fatty acids in the fat of the boar carcass.

Abstract: Method for the determination of fluidic-contained aldehydes. The method comprises bringing into contact said aldehyde and a chemically inert substrate having adhered to the surface thereof a substantially monodisperse system of particles of a derivatizing agent for the aldehydes thereby forming nucleating crystals; treating said nucleating crystals with a metastable supersaturated solution in which said nucleating crystals can grow; growing said nucleating crystals to form an optically measurable film of crystals; and optically measuring said film of crystals to determine the concentration of fluidic-contained aldehydes.