22. Thin Layer Chromatography Kit (TLC Kit) SONAR : Complete with applicator, thin layer drawing board, drawing rack, developing chamber, aluminium carrier, spotting jug, silica gel, pipette 0.1 ml, square & rectangular glass plate & glass sprayer.
   
105. SONAR Deluxe Digital pH Meter Bench Top Model : With Auto Temperature Compensation, combined pH electrode and RTD probe 3½ digit LED display
pH range – 1 to 14 pH
Resolution 0.01 pH
Accuracy 0.01

      
106. SONAR Digital Conductivity Meter Bench Top Model : 3½ digit LED display with facility for temperature compensation and digital cell constant adjustment supplied with conductivity cell of cell constant 1.0 approx. Range -0.1 to 1000 us/cm in five ranges.
     
107. SONAR Digital T.D.S. Meter Bench Top Model : 3½ digit LED display with facility for digital cell constant adjustment along with TDS. cell Range -0.1 to 1000 ppt