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BLUELINE REFILLABLE pH ELECTRODES
Robust Refillable pH electrodes for basic pH measurements.
Refillable pH electrodes FEATURES:
  • Comfortable handling, stylish design, and reliable function
  • Refillable liquid electrolyte with unique platinum diaphragm and refill port slider
  • Basic series for general applications
To Order Call 1-800-876-1172
Refillable pH electrodes Options & Prices
On this page:

Refillable pH electrodes Product Description
Refillable pH electrodes Specifications
Refillable pH electrodes Options & Prices

Downloads (PDF):

Refillable pH electrodes Brochure
Refillable pH electrodes Manual*

*May take several minutes to download, depending on your internet connection speed.
Additional Information:

Refillable pH electrodes measurement values explained
Refillable pH electrodes calibration explained
Refillable pH electrodes calibration methods
Refillable pH electrode maintenance explained
Refillable glass pH electrode types explained
Refillable pH electrode reference systems and diaphragms explained
Product Support

Refillable pH electrodes Product Description
Refillable pH electrodes are a very important part of your pH measurement system as they come in direct contact with your sample and deliver the measurement signal.  For more than 70 years SI Analytics has focused on creating the best refillable pH electrodes along with several other types of pH electrodes.  SI Analytics' refillable electrodes have been used for the most demanding tasks in labs throughout the world where quality really matters, and our customers benefit from their know-how.

The compact BlueLine refillable pH electrode range is a basic series comprising electrodes for typical laboratory applications.  An accurate and fast pH measurement is ensured by precision manufacturing and employment of high quality material, e.g. low-resistance A-type membrane glass and a unique platinum diaphragm.  These refillable pH electrodes use standard 3 mol/l KCl refill solution as their reference electrolyte.  The refillable pH electrodes are available with different connections (e.g. plug head or fixed cable with either DIN or BNC type plug) in 3.28 ft (1 m) cable lengths and, optionally, with built-in temperature sensors (NTC 30 kΩ or Pt 1000).  With a comfortable handling, stylish design, and reliable function the refillable pH electrodes are great for your laboratory measurements.  Each refillable pH electrode comes with its own individual serial number for easy tracking.
Refillable pH electrodes Specifications
pH Range: 0 to 14
Temperature Range: 23 to +212°F (-5 to +100°C)
Shaft: glass, 12 mm Ø
Shaft Length (not including plug head): 4.7 in (120 mm)
Zero Point: pH = 7.0 ±0.3
Diaphragm: Platinum
Reference System: Ag/AgCl
Reference Electrolyte: KCl 3 mol/l
Shape of Glass Membrane: Conical
Resistance of Glass Membrane (77°F (25°C)): 200 MΩ
Type of Membrane Glass: A
Refillable pH electrodes Options & Prices
Prices listed are for United States and Canada only.  Call or e-mail us for pricing in other countries.
Terms and Conditions

BLUELINE REFILLABLE pH ELECTRODE WITH BNC CONNECTOR
BlueLine 17 pH Refillable pH Electrode (PN# 285129171)
3.28 ft (1 m) fixed cable with BNC plug, no temperature sensor integrated.
Pricing
BlueLine 15 pH Refillable pH Electrode (PN# 285129155)
3.28 ft (1 m) fixed cable with BNC plug and 4 mm banana plug, integrated temperature sensor NTC 30kΩ.
Pricing
BlueLine 15 pH ID Refillable pH Electrode (PN# 285129450)
3.28 ft (1 m) fixed cable with BNC plug and 4 mm banana plug, integrated temperature sensor NTC 30kΩ, automatic electrode ID recognition.
Pricing
BlueLine 15 pH Cinch Refillable pH Electrode (PN# 285129450)
3.28 ft (1 m) fixed cable with BNC plug and cinch plug, integrated temperature sensor NTC 30kΩ.
Pricing
BlueLine 19 pH Refillable pH Electrode (PN# 285129190)
3.28 ft (1 m) fixed cable with BNC plug and 4 mm banana plug, integrated temperature sensor Pt 1000.
Pricing
BLUELINE REFILLABLE pH ELECTRODE WITH DIN CONNECTOR
BlueLine 12 pH Refillable pH Electrode (PN# 285129122)
3.28 ft (1 m) fixed cable with DIN plug 19 262, no temperature sensor integrated.
Pricing
BlueLine 14 pH Refillable pH Electrode (PN# 285129147)
3.28 ft (1 m) fixed cable with DIN plug 19 262 and 4 mm banana plug, integrated temperature sensor NTC 30kΩ.
Pricing
BlueLine 14 pH-ID Refillable pH Electrode (PN# 285129440)
3.28 ft (1 m) fixed cable with DIN plug 19 262 and 4 mm banana plug, integrated temperature sensor NTC 30kΩ, automatic electrode ID recognition.
Pricing
BlueLine 18 pH Refillable pH Electrode (PN# 285129188)
3.28 ft (1 m) fixed cable with DIN plug 19 262 and 4 mm banana plug, integrated temperature sensor Pt 1000.
Pricing
BLUELINE REFILLABLE pH ELECTRODE WITH OTHER CONNECTOR
BlueLine 11 pH Refillable pH Electrode (PN# 285129114)
Plug head (recommended cable: LB 1 A), no temperature sensor integrated.
Pricing
BlueLine 17 pH-R Refillable pH Electrode (PN# 1064746)
3.28 ft (1 m) fixed cable with Metrohm plug, no temperature sensor integrated.
Pricing
REFILLABLE pH ELECTRODE PLUG HEAD CABLES
LB 1 A Refillable pH Electrode Cable (PN# 285122653)
Coaxial electrode plug (for BlueLine pH Electrode), 3.28 ft (1 m) coaxial cable, DIN instrument plug.
Pricing
LB 1 BNC Refillable pH Electrode Cable (PN# 285122661)
Coaxial electrode plug (for BlueLine pH Electrode), 3.28 ft (1 m) coaxial cable, BNC instrument plug.
Pricing
LB 3 A Refillable pH Electrode Cable (PN# 285122678)
Coaxial electrode plug (for BlueLine pH Electrode), 9.84 ft (3 m) coaxial cable, DIN instrument plug.
Pricing
REFILLABLE pH ELECTRODE CALIBRATION SOLUTION
L 4004 4.00 pH Buffer, 250 mL (PN# 285138032) Pricing
L 7004 7.00 pH Buffer, 250 mL (PN# 285138049) Pricing
L 1004 10.01 pH Buffer, 250 mL (PN# 285138057) Pricing
L 4014 4.01 pH DIN Buffer, 250 mL (PN# 285138008) Pricing
L 6874 6.87 pH DIN Buffer, 250 mL (PN# 285138016) Pricing
L 9184 9.18 pH DIN Buffer, 250 mL (PN# 285138024) Pricing
L 400 4.00 pH Buffer, 1000 mL (PN# 285138727) Pricing
L 700 7.00 pH Buffer, 1000 mL (PN# 285138735) Pricing
L 100 10.01 pH Buffer, 1000 mL (PN# 285138719) Pricing
L 401 4.01 pH DIN Buffer, 1000 mL (PN# 285138098) Pricing
L 687 6.87 pH DIN Buffer, 1000 mL (PN# 285138102) Pricing
L 918 9.18 pH DIN Buffer, 1000 mL (PN# 285138119) Pricing
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