Why should you choose us over other suppliers?

REX is one of the earliest electrode manufacturers in China, with extensive expertise, advanced technology, and rich industry experience. Our product quality and brand reputation are among the best in the country.

How about your service?

We provide comprehensive pre-sales, in-sales, and after-sales services. We value trust and long-term partnerships with our clients, not just one-time transactions. Therefore, your needs and satisfaction are always our top priority!

What payment methods do you accept?

Accepted Delivery Terms: FOB - Accepted Payment Currencies: USD, CNY - Accepted Payment Methods: T/T, Credit Card, Cash - Languages Spoken: English, Chinese

E-301f pH Combination Electrode (30K)

Name: E-301f pH Combination Electrode (30K)
Brand: REX (Shanghai) Technology Co., Ltd.
SKU: 2153640605

Shanghai, ChinaREX (Shanghai) Technology Co., Ltd.

US$32.00

1-99 pieces

US$28.00

100+ pieces

Product profile

Customization

Available

Type

Ph Electrode

Cooling System

Clean After Use.

Model NO.

E-301F

Function

Environmental Protection, Water Quality Analysis

Materials

Glass

Portable

Appliance

Food Analysis, Medical Research, Biochemistry, Environmental Protection, Water Quality Analysis

Certification

ISO9001, RoHS, CE, Epr, CNAS, ISO-14001

After-Sales Service

1 Year

Warranty

1 Year

Display

Connect The Instrument to Display The Data

Size(mm)

Diameter 12*120

Measuring Range(pH)

0-14

Connector

BNC+Q6

Accuracy

0.01 pH

Temp Range(℃)

5-65

Active Component

3.0 Mol/L Kcl

Housing Material

Polycarbonate

Customized Support

OEM, ODM

Salt Bridge Material

Fibre

Transport Package

(24.5*13*5.5)Cm

Specification

Φ12*120mm

Trademark

REX

Origin

Shanghai, China

Production Capacity

1000 Piece/Pieces Per Month

Key features

Comprehensive Warranty: 1-year warranty coverage for all mechanical and functional defects.

OEM and ODM Support: Full customization services including design, samples, and brand creation.

High Precision Measurement: Accuracy of 0.01 pH with a measuring range of 0-14 pH.

Wide Temperature Range: Operates effectively within a temperature range of 5-65 degrees Celsius.

Multiple Certifications: Certified by ISO9001, ISO14001, RoHS, CE, Epr, and CNAS.

No Minimum Order Quantity: Accepts orders starting from 1 piece with sample orders available.

Pre-Soaked for Immediate Use: Electrodes are pre-soaked in pure water or alcohol before shipping.

Durable Polycarbonate Housing: Constructed with robust polycarbonate material for long-lasting performance.

Company profile

Patents AwardedFast DeliveryLow MOQFlexible Customization

REX (Shanghai) Technology Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory & Trading Company CertifiedR&D Capacity: ODM Service Available & OEM Service Available CertifiedCustomization Options: Customization from Samples, Customization from Designs, etc. CertifiedExport Year: 9 years CertifiedNearest Port: Shanghai PortAverage Response Time: ≤8.63h

AI-Powered supplier vetting

SummaryRex is identified as a professional technical supplier focused on electrochemical analysis instruments, sensors, and application solutions, with more than half a century of stated experience. It provides 3D design, customization, ODM, OEM, and SDK-related capabilities, and reports new product development during the past year. Quality processes include documented finished-product inspection, corrective and preventive action procedures, complaint-handling procedures, quality assurance, and raw-material traceability. Export activity is established, with 41%–50% of sales from exports and nine years of exporting experience. However, the available information indicates no valid manufacturing-capacity contract with affiliated subcontractors, no in-stock service, overseas warehouse, overseas showroom, overseas agents or branches, or offline trade-show participation. Environmental and fire-drill information is unavailable. No explicit certification information or named customer cases is provided.

Supplier typeThe supplier is explicitly identified as a professional technical supplier. Its stated business focuses on electrochemical analysis instruments, sensors, and application solutions, covering laboratory, online, and on-site testing.

After-Sales capabilityThe supplier has documented and followed procedures for customer complaints and corrective/preventive actions, plus written supplier-service assessment procedures. However, it reports no overseas agents or branches and no overseas service countries, limiting evidence of localized international after-sales coverage.

R&D capabilityThe supplier reports professional technical R&D capability, an available SDK, new products during the past year, ODM services, and OEM services for popular brands. Its stated long-term focus on electrochemical analysis and expanding product categories further supports technical innovation capability.

Customization capabilityThe supplier explicitly supports customization from samples, designs, full customization, minor customization, and flexible customization, alongside 3D design, ODM, and OEM services. This is direct evidence of broad customization capability.

Product Q&A

Q:Who are we? Can we schedule a company visit?

Our headquarters is located in Shanghai, China, and includes various departments such as Production, Technical, Marketing, and more. We warmly welcome clients to visit our factory and explore our products. If you're interested, please contact our customer service in advance-we're sure you'll have a wonderful experience!

Q:What is the minimum order quantity for your products?

We do not have a minimum order quantity. For larger orders, we also accept sample orders so you can check the quality first.

Q:Can customers create their own brand?

Absolutely! We support both ODM and OEM services and can customize products according to your specific requirements.

Q:What can you purchase from us?

We offer a wide range of products, including laboratory pH sensors, conductivity probes, dissolved oxygen sensors, ion-selective sensors, reference sensors, and more. In addition, we provide online electrodes, laboratory testing equipment, and large-scale online monitoring instruments.

Q:How do we ensure quality?

We always prepare pre-production samples before mass production and conduct final inspections before shipment. Due to the unique nature of electrodes, we pre-soak them in pure water or alcohol before shipping to ensure they are ready for immediate use upon arrival.