What is the minimum flow rate required?

The minimum flow rate is 200 ~ 250ml/min, and the circulation flow cannot be less than 30L/h.

What materials are used for the electrode?

The electrode material consists of a 316L stainless steel shell, POM membrane cap, and PTFE membrane.

Polarographic Residual Chlorine Sensor (YLG-2058-01)

Name: Polarographic Residual Chlorine Sensor (YLG-2058-01)
Brand: Shanghai Boqu Instrument Co., Ltd.
SKU: 725547005

Shanghai, ChinaShanghai Boqu Instrument Co., Ltd.

Negotiable

1 Piece

Product profile

Customization

Available

Model

Cl-2058-01

Principle

Polarographic

Model NO.

CL-2058-01

Transport Package

Carton, PP Bag

Specification

CE, SGS, ISO

Trademark

Boqu

Origin

Shanghai

HS Code

9027809900

Production Capacity

50000PCS/Year

Key features

High Accuracy & Stability: Responsive polarographic sensor with high accuracy and good stability for precise measurements.

Wide Application Scope: Suitable for drinking water, industrial process water, swimming pools, and other chlorine monitoring.

Durable & Pollution Resistant: Features a durable film that is pollution resistant, ensuring long-term performance in various media.

Easy Maintenance: Simple operation and easy maintenance design for convenient user experience.

Customizable Temperature Compensation: Thermistor resistance for temperature compensation can be customized by the user.

OEM & ODM Support: Supports OEM and ODM services with 20+ years of R&D experience and 50+ patents.

Fast Response Time: 90% response time under 2 minutes at room temperature for efficient monitoring.

Quality Assurance: 100% OQC inspection for all products before shipping with testing pictures and videos provided.

Company profile

Shanghai Boqu Instrument Co., Ltd.

Shanghai, China

CertifiedBusiness Type: Manufacturer/Factory CertifiedR&D Capacity: ODM Service Available & OEM Service AvailableExport Year: 2014-01-06 CertifiedNearest Port: Shanghai PortAverage Response Time: ≤7.10h CertifiedTerms of Payment: LC, T/T, D/P, etc.

AI-Powered supplier vetting

SummaryShanghai Boqu Instrument Co., Ltd. is identified as a China-based manufacturer established in 2007, with 111 employees and operations in Pudong, Shanghai. It produces electrochemical instrumentation and electrodes, including pH, conductivity, dissolved oxygen, turbidity, ion concentration, and flow-measurement products. The supplier reports ISO9001:2015 and ISO14001:2015 certifications, two production lines, a 1,368 m² manufacturing plant, ten years of R&D engineer experience, and six to ten quality-control staff. Its export activity began in 2014, with exports representing 21%–30% of sales. The company states that it provides after-sales service and uses advanced technology and equipment, but the slices do not provide measurable service performance, innovation outputs, customization evidence, or detailed customer case results.

Supplier typeThe supplier is classified as a manufacturer and is described as a professional manufacturer of electrochemical instrumentation and electrodes with R&D, production, and sales capabilities. Its registered address and factory location are both in Pudong, Shanghai, China.

CertificationsThe supplier reports holding ISO9001:2015 and ISO14001:2015 management-system certificates. These explicitly support quality-management and environmental-management certification, although certificate scope or validity details are not provided.

After-Sales capabilityThe company explicitly states that it focuses on after-sales service and offers “perfect after-sales service,” and claims this has helped earn customer and partner trust. However, no service-team size, response-time data, warranty terms, or service records are provided.

Production capacityThe supplier reports a manufacturing plant of 1,368 m², two production lines, six to ten quality-control staff, and ten years of R&D engineer experience. Its product range covers multiple electrochemical instruments and sensors, and it is identified as the manufacturer of listed BOQU products, providing explicit evidence of production capability.

Product Q&A

Q:What are the typical applications for this sensor?

It is suitable for drinking water, industrial process water disinfection technology residual chlorine concentration online monitoring, and can also be used for swimming pools and other places chlorine concentration measurement.

Q:What is the measuring principle of this sensor?

It is a diaphragm-type polarographic electrode (Clark) sensor. Residual chlorine diffuses through the membrane to the cathode, where a chemical reaction proportional to the current measurement occurs.

Q:What is the measurement range for HClO and HOCl?

The measurement range is 0.05 ~ 20ppm for HClO and 0.01 ~ 5ppm for HOCl.

Q:What is the response time of the sensor?

The response time is less than 2 minutes for 90% at room temperature and less than 5 minutes for 95% at room temperature.

Q:What is the temperature range for measurement?

The temperature range for measurement is 2 ~ 45 degrees centigrade.