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Technical Service

David Houpt ran a statistical analysis on the MS data between both track systems. The data shows an over correction an average of 9.213%, concluding that the correction factor should be lowered to 1.174 from 1.282. At the time of this report David Houpt was in communication with the manufacturer for additional input.
Cleaning and calibration of the instruments on the STMSL was performed periodically throughout the expedition (e.g., plastic shield emplaced above source hole; when this gets dirty, the density values for the water standard begin to rise above the allowed 1.02 g/mL value).

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Technical Service

Cleaning/lubrication of P-Wave caliper with silicon spray and DI water was performed periodically. At various times throughout the expedition the end caps were removed and both surfaces of transducers and end caps cleaned. A drop of propylene glycol coupling agent was added to the surfaces to ensure good energy transmission throughout the various components of different materials (stainless steel end caps; piezo-material of transducers, etc.). Periodic calibrations were also performed on the GRA and P-Wave.

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Technical Service

Cleaning and calibration was performed by Bill Crawford.

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Technical Service

Both bulbs were replaced in the Ocean Optics during this expedition. Some difficulty was experienced at first as the set screw location (under the cooling fan) was not remembered.
The white Spectralon standard was cleaned and polished twice. Set screws were added to allow the advancement of the standard material out of the aluminum holder for polishing; this extends the lifetime of the standard considerably.
When cutting Glad wrap, the band saw will melt the ends together making the roll difficult or unable to peel. After band sawing, the melted ends should be trimmed with a knife or hacksaw.

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