What is AS3304?

AS3304 is a freestanding automated weighing system developed for laboratories that need
high-precision sample weighing at the micro-scale. It automates weighing, records weight data, manages tray
identification and exports results to support efficient and traceable laboratory workflows.

Compared with standard automated weighing systems, AS3304 is positioned as a
precision weighing platform with a 5-place analytical balance, 0.01 mg resolution,
320 g balance capacity and controlled weighing environment. It is ideal for weighing tasks that demand
high sensitivity and excellent stability.

Why Use an Automated 0.01 mg Weighing System?

In TSS, TDS and micro-weighing applications, very small mass differences can significantly affect final
analytical results. Manual weighing can introduce risks such as sample position mix-ups, transcription errors,
unstable environmental conditions, operator-to-operator variability and limited traceability across sample batches.

AS3304 helps standardize the weighing workflow by automating key steps, controlling the weighing environment,
reading tray barcodes, recording data automatically and exporting results in CSV format. This improves data
reliability, increases sample processing productivity and reduces technician workload.

Key Features of AS3304

• Fully automatic weighing:
  automates repetitive weighing workflows and improves consistency.
• 0.01 mg balance resolution:
  uses a 5-place analytical balance for precision and micro-weighing applications.
• Capacity for up to 120 samples:
  supports four sample trays with 30 or 40 positions per tray.
• Climate-controlled weighing environment:
  supports stable weighing conditions, especially for moisture-sensitive or high-precision samples.
• Barcode readers:
  four barcode readers capture tray IDs, reducing sample mix-ups and improving traceability.
• Automatic data handling:
  records all weights automatically and exports results to an easy-to-understand CSV file.
• Configurable method builder:
  allows weighing workflows to be adjusted to testing requirements and internal SOPs.
• TSS and TDS compatibility:
  supports Total Suspended Solids and Total Dissolved Solids workflows.
• Windows-based software:
  included for full control of the weighing process.
• LIMS workflow support:
  CSV export can be used for data management and laboratory information workflows.

Typical Specifications

• Model: AW3304
• Description: Freestanding Autoweigh Precision Weighing
• Number of tray positions: 4
• Samples per tray: 30/40
• Number of trays included: 4
• Standard tray dimensions: 396W × 496D × 32H mm
• Balance resolution: 0.01 mg, 5-place analytical balance
• Balance capacity: 320 g
• Balance correction available: Yes
• Balance remote display: Yes
• Barcode readers: 4 readers for tray ID capture
• Suspended Solids method compatible: Yes
• Total Dissolved Solutions method compatible: Yes
• Accepts test tubes: 120 × 19 mm
• Climate controlled: Yes
• Humidity and temperature readings: Yes
• Air supply required: Yes
• Heater: 2 × 60 W
• System dimensions: 2055W × 846D × 1270H mm
• Weight: approximately 203.5 kg
• Power requirements: 100–240 VAC, 10 A
• Computer: fully integrated computer with external screen, mouse and keyboard included
• Software: Windows-based software
• LIMS integration: CSV data file export

Typical Applications of AS3304

1. Total Suspended Solids (TSS)

AS3304 is especially suitable for Total Suspended Solids workflows. TSS analysis often requires weighing
filters or containers before and after sample processing, where accurate and repeatable mass measurements
are critical to final result quality.

With 0.01 mg resolution and automated weighing, AS3304 helps standardize TSS workflows, reduce operator error
and improve traceability for environmental and water testing laboratories.

2. Total Dissolved Solids (TDS)

In Total Dissolved Solids analysis, AS3304 can support container weighing, residue weighing after processing
and batch-based data management. CSV export makes results easy to review, store and integrate into laboratory
data systems.

3. Water and Environmental Testing

Laboratories analyzing surface water, groundwater, wastewater, treated water or sludge samples often process
large sample volumes with strict data requirements. AS3304 improves sample processing productivity, reduces
manual handling and strengthens weighing data reliability.

4. Materials Research and Micro-Weighing

AS3304 can be used for weighing powders, micro-scale materials, catalysts, nanomaterials, additives or
research samples that require high resolution. The configurable method builder allows the weighing workflow
to be adapted to application-specific requirements.

5. Food, Agriculture and Quality Control

For QC or R&D laboratories weighing many food, agricultural, feed or raw material samples, AS3304 helps
reduce transcription errors and improve consistency between sample batches.

Benefits of Implementing AS3304

• Increases sample processing productivity in high-volume weighing workflows.
• Reduces operator-related weighing errors.
• Minimizes transcription and manual data entry mistakes.
• Standardizes TSS, TDS and micro-weighing procedures.
• Improves traceability through barcode reading and CSV export.
• Supports laboratory quality management requirements such as ISO/GLP workflows.
• Frees technicians from repetitive weighing tasks.
• Fits environmental and water laboratories with high sample volumes.

Who Should Consider AS3304?

• Environmental testing laboratories.
• Environmental monitoring centers.
• Water and wastewater testing laboratories.
• Water treatment plants.
• TSS and TDS laboratories.
• Materials research and micro-weighing laboratories.
• Universities, research institutes and high-throughput service laboratories.
• Food, agriculture and raw material QC laboratories.

Why Choose AS3304 with 2H Instruments?

2H Instruments supports customers in Vietnam in selecting and implementing the AS3304
automated weighing system based on real applications, sample volume, precision requirements, data workflow
and installation conditions.

• Application consultation for TSS, TDS and micro-weighing workflows.
• Support in evaluating automated weighing workflows for laboratories.
• Advice on CSV/LIMS data integration.
• Support for tray, weighing adapter and installation requirement selection.
• User training, maintenance and after-sales technical support in Vietnam.

Frequently Asked Questions about AS3304

How is AS3304 different from AS3302?

AS3304 is a higher-precision automated weighing system, with 0.01 mg resolution, capacity for up to
120 samples, four trays, barcode readers, a climate-controlled weighing environment and TSS/TDS compatibility.
AS3302 is better suited for standard automated weighing with 0.1 mg resolution.

Is AS3304 suitable for TSS analysis?

Yes. AS3304 is compatible with Suspended Solids methods and is particularly suitable for laboratories
automating weighing steps in TSS workflows.

Can AS3304 data be integrated with LIMS?

The system exports results as CSV files, which can be used in LIMS workflows or internal laboratory
data management systems.

Does AS3304 require air supply?

Yes. In its standard configuration, AS3304 requires an air supply for operation.