So far, I have several sales pending on a bunch of items... I will update later with a firm list of what remains available.
In the meantime, I am dropping the price of the Tunze 6100.1 to $115
I am also adding the following items for sale:
Tunze 7091 Single Controller - $30
RHS-10ATC Portable
Refractometer (never used) - $30 OBO
Some info on the refactometer-
The RHS series of portable refractometers is designed to measure the salinity of sea water and saline solutions of similar concentration. One scale checks the NaCl levels with the range of 0-100 ppt (with 1 ppt scale divisions) and the other scale gauges Specific Gravity with a range of 1.000 to 1.070 (+/- 0.001 accuracy). Both enable the direct determination of salinity in water that contains dissolved salt and little or no other dissolved solids.
All RHS models use ambient light, no battery or power source is required. Models with the ?ATC? suffix are equipped with ?Automatic Temperature Compensation? for accurate measurements without recalibration after shifts in ambient working temperature (field use).
Included are: a pipette for dropping test fluids onto the prism, a mini screwdriver for scale calibration, and a Users Guide. All of this is inside a Blue, hard plastic, foam-lined case.