Hanna Instruments HI 3221 Instruction Manual page 63

HI 1131B
Glass-body, single junction, refillable, combination pH electrode.
Use: general purpose.
HI 1131
"S" VERSION
HI 1330B
Glass-body, semimicro, single junction, refillable, combination pH electrode.
Use: laboratory, vials.
HI 1330
"S" VERSION
HI 1331B
Glass-body, semimicro, single junction, refillable, combination pH electrode.
Use: flasks.
8 mm
HI 1331
"S" VERSION
HI 1230B
Plastic-body (PEI), double junction, gel-filled, combination pH electrode.
Use: general, field.
HI 1230
"S" VERSION
HI 2031B
Glass-body, semimicro, conic, refillable, combination pH electrode.
Use: semisolid products.
HI 2031
"S" VERSION
9.5mm DIA 12 mm
0.37" 0.5"
120 mm
4.7"
5mm DIA 5mm
0.2" 0.2"
120 mm
4.7"
7.5mm DIA
0.3"
0.29"
210 mm
8.25"
12 mm
0.5"
120 mm
4.7"
6 mm
0.25"
75 mm
2.95"
63