Semi-automated reflectance readings of urinalysis dipsticks showed better precision than visual readings in the case of artificially prepared urine samples containing glucose, ketone, and protein. Actual pathological specimens containing glucose, protein, and nitrite also showed that instrumental readings were better than visual. Results of repeated visual readings spread over three different color blocks for certain concentrations of glucose, ketone, and protein, whereas repeated instrumental readings were never spread greater than two color blocks. Subjectivity can be reduced by semi-automated dipstick urinalysis.

Reproducibility of reading "N-Multistix" dipsticks by a semi-automated urinalysis instrument (Ames' "Clini-Tek") has been described for artifically prepared samples. Glucose, ketone, urobilinogen, and nitrite showed high reproducibility (greater than 90%) for reading multiple samples at predetermined analyte concentrations. Determination of proteinuria showed the lowest proportion of false positives (2-3%) and false negatives (0%). Determination of hemoglobinuria and bilirubinuria by dipsticks were the least reproducible. Urobilinogen showed no interference from bilirubin in concentrations up to 32 mg/liter. Precision was high for results for quality-control capsules provided by the manufacturer.

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Engineering studies on non-nuclear reactor assemblies (simulators) were made as follows: Reactor Simulator for Startup Development (RSSD) This simulator duplicates stored heat capacity and flow impedance of the reference reactor during an initial startup and restart transient. RSSD is to be a part of the Cold Flow Development Test System (CFDTS), which is in the planning stage of Aerojet-General Corporation's effort in propellant feed system control development. Reactor Simulator for ETS Flow Test This simulator is to be a part of E-engine simulator which would be used to check out installation details and to test flow interaction of the engine and the test stand facility (piping and ejector systems) at ETS-1 and 2. The reactor simulator is similar to RSSD except that the restart capability is not required.

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