Description
ATOMFAIR® PORTABLE CONDUCTIVITY METER / MODEL DDBJ-350FRESEARCH GRADE MATERIAL
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TAILORED SOLUTIONS FOR RESEARCH
Contact our engineering team for technical support or official quotations.
EMAIL: inquiry@atomfair.com
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Manufacturer: Atomfair LLC
Brand: ATOMFAIR®
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This instrument requires periodic calibration using standard conductivity solutions to maintain measurement accuracy. Proper electrode handling and temperature compensation are necessary for reliable readings across varying sample conditions.
- Calibration Requirement: The instrument must be calibrated using up to three points with auto-recognized standard solutions to ensure accuracy.
- Temperature Compensation: Temperature compensation modes (none, linear, pure water) must be selected appropriately based on the sample matrix.
- Measurement Mode Selection: The user must choose among auto-read, timed-read, or manual-read modes for endpoint determination.
- Data Integrity Requirements: Data storage and GLP-compliant traceability require user action to save and manage measurement records.
- Power Management: The rechargeable lithium battery requires periodic charging and cannot be replaced by the user.
Follow these steps to prepare the instrument for accurate conductivity measurement. The procedure covers power-on, calibration, and measurement using standard modes.
Required Equipment: Atomfair DDBJ-350F Conductivity Meter, Composite Conductivity Electrode, Calibration Solutions (GB standards)
- Power On and Language Selection
Press the power button and select either Chinese or English language on the touchscreen display. - Electrode Connection and Preparation
Connect the composite conductivity electrode to the meter and rinse the electrode with deionized water. - Calibration with Standard Solutions
Immerse the electrode in the first standard solution and initiate automatic calibration via the touchscreen. - Select Measurement Mode
Choose the appropriate endpoint mode (auto-read or manual-read) from the measurement menu. - Sample Measurement
Immerse the electrode in the sample and wait for the stabilized reading to display. - Record and Save Data
Press the save button to store the measurement result and ensure GLP-compliant traceability.
What is the effective lower measurement limit of the DDBJ-350F conductivity meter given its 0.001 μS/cm resolution and included electrode?
The included DJS-1VTC composite conductivity electrode has a measurement floor of 0.055 μS/cm, so the meter cannot accurately measure conductivity below this threshold even though the instrument resolution reaches 0.001 μS/cm. The auto-ranging electronics switch ranges based on actual signal, but the electrode’s lower bound is the practical limit.
Does the DDBJ-350F support direct integration with existing LIMS systems or does it require proprietary middleware?
The DDBJ-350F supports connection to LIMS systems via its USB port for PC communication and can also output to standard RS-232 serial printers. It includes a Micro USB to DB25 printer cable, and the data management section explicitly states compatibility with LIMS, enabling direct data transmission without proprietary middleware.
How does the IP65 rating and rechargeable lithium battery make the DDBJ-350F suitable for field water quality analysis?
The IP65 rating guarantees the meter is dust-tight and protected against low-pressure water jets, allowing reliable operation in wet or dusty field conditions without additional enclosures. The large-capacity rechargeable lithium battery can be charged via a PC or mobile power supply, and the unit includes a portable carrying case, making it fully self-contained for extended fieldwork.
The DDBJ-350F is a portable conductivity meter featuring a 4.3-inch touchscreen, intelligent measurement modes, and multi-parameter capabilities (conductivity, resistivity, TDS, salinity). It offers robust data management with GLP compliance and LIMS connectivity, making it suitable for field and lab water quality analysis.
Positive
- Intelligent multi-parameter measurement: Measures conductivity, resistivity, TDS, salinity, and temperature with auto-range switching and intelligent endpoint detection, allowing comprehensive water quality profiling in a single handheld device.
- Advanced data management and traceability: GLP-compliant storage of up to 1000 data sets, USB PC/LIMS connectivity, and RS-232 printer support ensure full data traceability and seamless integration into laboratory information systems.
Trade-offs
- Limited auto-recognition of calibration standards: The instrument automatically recognizes four types of GB standard conductivity solutions; for other standard solutions, manual calibration must be set, adding procedural steps in non-Chinese-standard environments.
- Consumable calibration solution dependency: Only ten 20 mL packets of conductivity solution (1408 μS/cm) are supplied; for frequent recalibration or use with multiple solution types, additional calibration standards must be sourced separately.
Every advanced material, component, equipment, and instrument in our catalog is backed by rigorous testing. We maintain strict internal quality management frameworks and align with CE conformity metrics to deliver transparent, reproducible performance data via our public open-science repository.
To request raw batch performance data, submit formal vendor registration paperwork, or execute a fast-turnaround R&D manufacturing loop, contact us at inquiry@atomfair.com.
Item is dispatched under the Atomfair Shipping & Delivery Framework (Free worldwide shipping on orders over $59 USD). Return is governed by the Atomfair Return & Refund Policy (7-day technical return window).
