Product Introduction

The fully automatic water sulfide acidification purging instrument is a specialized pretreatment instrument designed for detecting sulfides in water, in compliance with the national standards "GB/T 16489-1996 Determination of Sulfide in Water by Methylene Blue Spectrophotometry" and "HJ/T 60-2000 Determination of Sulfide in Water by Iodometric Method." The instrument features an integrated design with vertical acid addition, nitrogen purging, and acidification absorption, capable of processing 1 to 6 samples simultaneously. Each unit is equipped with an independent rotameter to control nitrogen flow rate. With PID heating temperature control, it automatically heats to the set temperature, provides automatic water shortage alarm and automatic water replenishment, significantly reducing sulfide pretreatment time. It is suitable for laboratories handling multiple, especially large batches of sulfide sample determinations.

Application Scope

Ideal for scientific research and hydrological institutions, it serves as an excellent pretreatment device for acidification-purging-absorption of sulfides in surface water, groundwater, domestic sewage, and industrial wastewater.

Main Features

1. The entire machine adopts a parallel layout for convenient and intuitive operation.
2. The instrument's exterior is made of corrosion-resistant materials, offering excellent chemical and thermal stability with a long service life.
3. Utilizes constant temperature water bath heating with PID temperature control.
4. Automatic water level control, automatic water replenishment, and automatic alarm for water shortage.
5. The main unit features a dedicated interface for easy external connection to nitrogen sources, with an overpressure protection system. Each sample's nitrogen flow is independently controlled. Built-in nitrogen flow limiting shut-off valve automatically cuts off nitrogen after acidification, saving nitrogen and protecting samples. Imported proportional valves automatically adjust and switch nitrogen during experiments, allowing operation in segmented time and flow according to standards, with automatic adjustment during the process.
6. The hydrochloric acid inlet, gas inlet, and outlet are integrated yet independent, ensuring non-interfering operation.
7. Automatic acid addition and sample injection, automatic pipeline cleaning, and automatic waste liquid collection.
8. Two working modes: water bath and non-water bath.

Applicable Standards

GB/T 16489-1996 Determination of Sulfide in Water by Methylene Blue Spectrophotometry
HJ/T 60-2000 Determination of Sulfide in Water by Iodometric Method
HJ 833-2017 Determination of Sulfide in Soil and Sediment by Methylene Blue Spectrophotometry (Water Bath)

Technical Parameters

Manufacturer Commitment
1. Strict Quality Inspection Procedures
Every production process at Shanghai Enji Instrument must be inspected and tested by the in-house quality control department. Only after passing inspection and obtaining a transfer slip, with important steps recorded, can the product proceed to the next process or leave the factory. Shanghai Enji is extremely stringent on equipment quality, aiming to produce high-quality, stable laboratory instruments for a better user experience and to support your scientific research.
2. Extended Warranty Period
All purchased laboratory instruments include free shipping and delivery. All instruments come with a one-year warranty upon user acceptance, with all costs due to product quality issues borne by us. After the warranty period, all spare parts are supplied at low cost for life, with lifelong repair services.
3. Comprehensive After-Sales Service
Service Principle: Fast, decisive, accurate, and thorough.
Service Goal: Win user satisfaction through service quality.
Service Efficiency: For equipment failures within or beyond the warranty period, Enji guarantees technical guidance via phone within 1-2 hours after notification and provides a solution within 24 hours after receiving the fault report.