Has an lcd screen, 3 buttons: power button, up arrow labeled mode/cal, down arrow labeled hold/temp • text on the device says tds/ec/ph/salinity which means it tests 4 things: total dissolved solids, electrical conductivity, ph
• the box shows an example reading of 0000 and 23.8°c
multifunction tiagram of the tester on the front • ph buffer powder packets: two calibration packets for accuracy ◦ ph 6.86 with green label ◦ one packet: ph 9.18 ◦ both say 250ml @ 25°c/77°f and ph solution accuracy is ±0.01ph • instruction sheet: partially visible in the top right, black with white text listing parameters like ph/temp, tds/ec/ph/temp
this kind of meter is common for testing drinking water, aquariums, hydroponics, pools, or lab work. you’d use the buffer powders to calibrate the ph reading before first use so the measurements are accurate.