HM-SNT Turbidity and Suspended Solids Meter

I. Product Description

The HM-SNT turbidity and suspended solids meter is a portable water quality instrument designed for the rapid determination of turbidity and suspended solids in water and transparent liquids. Using the turbidimetric method, it measures the degree of light scattering caused by insoluble particulate matter suspended in the sample and quantitatively characterizes the concentration of these suspended particles. The instrument provides simultaneous measurement of both turbidity and suspended solids parameters, eliminating the need for separate devices when dual-parameter data is required.

II. Scope of Application

The HM-SNT is applicable to a wide range of water quality monitoring scenarios, including:

1. Municipal wastewater treatment — effluent turbidity and suspended solids compliance monitoring

2. Drinking water supply — source water and distribution system quality assessment

3. Industrial process water — monitoring in food and beverage, pulp and paper, and chemical manufacturing

4. Environmental surveys — surface water quality investigation in rivers, lakes, and reservoirs

5. Aquaculture — water clarity and particulate matter management

6. Stormwater and runoff — sediment loading and turbidity assessment

7. Laboratory quality control — verification of sample clarity and solids content

III. Reference Standards

1. GB13200-91 — Water Quality — Determination of Turbidity

IV. Product Features

1. Dual-Parameter Measurement: Simultaneous determination of turbidity (0.5–300 NTU) and suspended solids (1–600 mg/L) in a single measurement cycle using the turbidimetric method.

2. Automatic Wavelength Selection: The instrument automatically selects the appropriate wavelength for consistent and reproducible measurement conditions.

3. High Repeatability and Stability: Both repeatability and stability are below 0.5%, ensuring reliable data for regulatory reporting and quality control.

4. Android Operating System: Intuitive touchscreen operation on a 3.5-inch color LCD with a familiar Android-based interface for efficient workflow management.

5. Extensive Data Storage: Internal memory stores over 80,000 measurement records with timestamp for long-term data traceability.

6. Comprehensive Connectivity: Type-C, Wi-Fi, hotspot, and Bluetooth interfaces enable flexible data transfer to computers, printers, and mobile devices.

7. Extended Battery Life: 5600 mAh lithium battery provides up to 8 hours of continuous operation for full-day field campaigns.

8. Portable Design: Compact dimensions (190 × 77 × 72 mm) and lightweight (325 g) for convenient field deployment.

V. Technical Specifications

Measurement Parameters

Performance

Display and Operation

Data and Communication

Power and Environment

Physical Specifications

VI. Frequently Asked Questions (FAQ)

Q1: What is the difference between the HM-SNT and a standard turbidity-only meter?

A: The HM-SNT provides simultaneous measurement of both turbidity and suspended solids concentration in a single instrument. A standard turbidity meter measures only turbidity (NTU). The HM-SNT uses the turbidimetric method to deliver both parameters, which is particularly useful for applications such as wastewater discharge monitoring where both turbidity and suspended solids values must be reported.

Q2: How does the turbidimetric method differ from the nephelometric method for turbidity measurement?

A: The turbidimetric method measures the attenuation of a light beam passing through the sample — essentially the decrease in transmitted light intensity caused by suspended particles. The nephelometric method measures the intensity of light scattered at a 90-degree angle to the incident beam. The HM-SNT employs the turbidimetric method in compliance with GB13200-91, which is well-suited for the measurement ranges and applications specified for this instrument.

Q3: Can the HM-SNT be used for field measurements, or is it limited to laboratory use?

A: The HM-SNT is designed for both field and laboratory use. It weighs only 325 g with dimensions of 190 × 77 × 72 mm, features a 3.5-inch color touchscreen, and is powered by a 5600 mAh lithium battery providing up to 8 hours of continuous operation. Wi-Fi, Bluetooth, and Type-C connectivity enable on-site data transfer without requiring a laboratory workstation.

Q4: What is the suspended solids measurement range, and how is it calibrated?

A: The suspended solids measurement range is 1–600 mg/L. Calibration is performed using standard solutions of known concentration. The instrument stores over 80,000 measurement records, allowing users to track calibration history and measurement trends over time for quality assurance purposes.

Q5: How many data records can the instrument store, and how can data be exported?

A: The HM-SNT stores over 80,000 measurement records internally. Data can be exported through multiple communication interfaces including Type-C wired connection, Wi-Fi wireless transfer, mobile hotspot, and Bluetooth. This flexibility supports various data management workflows, from direct computer download to cloud-based data logging via Wi-Fi connectivity.

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