Hamilton Laboratory pH and ORP Electrodes (GLP Series)

Hamilton GLP laboratory pH and ORP electrodes are combination electrodes for daily laboratory work in GLP environments. Every electrode has an indelible serial number printed on the shaft and comes with an individual test certificate that lists the measured millivolt values, which supports traceability in your documentation. Mikron Proses (Üsküdar, Istanbul) is one of Hamilton’s distributors in Turkey. We supply laboratory electrodes, S7 cables, electrolytes and DuraCal pH buffers, and we provide application consulting on matching an electrode to your benchtop pH meter and sample type.

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Electrode selection by sample type

The model codes (REF) and technical limits below are taken from the Hamilton GLP Laboratory Electrodes Catalog (electrode pages and the specifications table).

Application group	Model and main REF	Electrolyte and reference system	Diaphragm and shaft	Temperature and typical samples
Ion-weak, organic and difficult samples	Polilyte Lab (REF 238403; temperature models 242058, 242059, 242060, 242062)	Polisolve (maintenance-free); Everef-B	Single Pore; glass shaft	-10 to 80 °C; emulsions, suspensions, ion-weak media
General high-accuracy laboratory work	Single Pore Glass (REF 238160)	Skylyte-CL (refillable, REF 242080); Everef	Single Pore; glass shaft	0 to 100 °C; emulsions, ion-weak media, general laboratory applications
Protein and very small volumes	BioTrode (REF 238140)	Protelyte (refillable, REF 238038); Everef	Ceramic diaphragm; 3 mm shaft, 7 mm immersion depth	0 to 100 °C; solutions containing protein, microtiter plates
Test tubes, vials and NMR tubes	SlimTrode (REF 238150), MiniTrode (REF 238100), SpinTrode (REF 238197)	3 M KCl (refillable); Everef	Ceramic diaphragm; shaft below 6 mm (SlimTrode), 3 mm (MiniTrode, SpinTrode)	0 to 100 °C; test tubes (SlimTrode), vials (MiniTrode), NMR tubes (SpinTrode)
Foodstuffs with protein	FoodTrode (REF 238285)	Protelyte (refillable); Everef	3 ceramic diaphragms; glass shaft	-10 to 100 °C; media containing proteins
Solid and semisolid samples	TipTrode (REF 238080); Double Pore (REF 238400)	TipTrode: Protelyte, Everef. Double Pore: Polisolve, Ag/AgCl	TipTrode: ceramic diaphragm. Double Pore: 2 Single Pores	TipTrode 0 to 100 °C; Double Pore 0 to 60 °C; puncture electrodes, Double Pore for cheese and meat
Flat surfaces	FlaTrode (REF 238401)	Polisolve (maintenance-free); Everef	Ring diaphragm; flat glass membrane; plastic shaft	0 to 60 °C; surfaces such as paper and agar plates
Viscous samples and very low conductivity	FlushTrode (REF 238060)	3 M KCl (refillable, REF 238036); Everef	Sleeve (ground sleeve) diaphragm; glass shaft	-10 to 80 °C; viscous samples, ion-weak media, cosmetics
Standard general laboratory use	Liq-Glass (REF 238000), Gel-Glass (REF 238025)	Liq-Glass: 3 M KCl (refillable); Everef. Gel-Glass: gel; Ag/AgCl	Ceramic diaphragm; glass shaft	Liq-Glass -10 to 100 °C; Gel-Glass -10 to 60 °C; routine aqueous solutions
Plastic shaft (portable and water applications)	Polyplast (REF 238380; BNC 238381; temperature models 242050, 242051, 242052) and FillTrode (REF 242064)	Polisolve (maintenance-free); Ag/AgCl (Polyplast), Everef (FillTrode)	Single Pore (Polyplast), ring diaphragm (FillTrode); plastic shaft	0 to 60 °C; water and sewage
Laboratory ORP (redox)	Liq-Glass ORP (REF 238145), Polyplast ORP (REF 238385; BNC 238384)	Liq-Glass ORP: 3 M KCl; Everef. Polyplast ORP: Polisolve; Ag/AgCl	Platinum; 3 ceramic diaphragms (Liq-Glass ORP) or Single Pore (Polyplast ORP)	±2000 mV; Liq-Glass ORP -10 to 100 °C, Polyplast ORP 0 to 60 °C

For samples containing protein, the catalog recommends replacing the 3 M KCl in the refillable electrodes with Protelyte (REF 238038).

S7 cables, electrolytes and care solutions

Hamilton electrodes with an S7 head are connected to the pH meter with a 3 mm coaxial S7 cable. The equipment-side plug is chosen to fit the pH meter. All BNC plugs have a moveable protective cover that protects the plug from fluid splashes.

Product group	Description and length or volume	Hamilton order code (REF)	Used with
S7 / BNC cable	1 m, 3 m or 5 m	REF 355173 (1 m), 355176 (3 m), 355178 (5 m)	pH/ORP meters with a BNC input
S7 / DIN cable	1 m, 3 m or 5 m	REF 355174 (1 m), 355177 (3 m), 355179 (5 m)	pH/ORP meters with a DIN input
S7 / Lemo cable	1 m	REF 355175	pH/ORP meters with a Lemo input
3 M KCl electrolyte	100 mL or 500 mL	REF 238036 (100 mL), 238936 (500 mL)	Liq-Glass, FlushTrode, SlimTrode, MiniTrode, SpinTrode, Liq-Glass ORP
Skylyte-CL electrolyte	100 mL	REF 242080	Single Pore Glass
Protelyte electrolyte	100 mL	REF 238038	BioTrode, FoodTrode, TipTrode
Storage solution	500 mL, acid-buffered; also regenerates the electrode	REF 238931	Storage of the electrodes
Cleaning solution set	Cleaning Solution A, Cleaning Solution B and storage solution; 15 to 30 minutes in each solution	REF 238290	Removing contamination from the pH glass and the diaphragm

Related pages

• Hamilton pH and ORP process sensors
• pH electrode selection guide
• Hamilton brand page