Hanna Instruments HI 4211 - Manual (Page 70)

7 0
HI 1131B
Glass-body, single junction, refillable, combination pH electrode.
Use: general purpose.
HI 1330B
Glass-body, semimicro, single junction, refillable, combination pH electrode.
Use: laboratory, vials.
HI 1331B
Glass-body, semimicro, single junction, refillable, combination pH electrode.
Use: flasks.
HI 1230B
Plastic-body (Ultem
® ), double junction, gel-filled, combination pH electrode.
Use: general, field.