Itioture XDRS-028 Digital Salinometer with Automatic Temperature Compensation
| Brand | Itioture |
|---|---|
| Origin | Taiwan |
| Manufacturer Type | OEM/ODM Producer |
| Model | XDRS-028 |
| Measurement Range (Salinity) | 0–28% w/w NaCl |
| Resolution | 0.1% |
| Accuracy | ±0.2% |
| Temperature Measurement Range | 0–40 °C |
| Temperature Accuracy | ±1 °C |
| ATC Range | 5–40 °C |
| Dimensions | 120 × 56 × 36 mm |
| Weight | 120 g |
| Display | Backlit LCD |
Overview
The Itioture XDRS-028 Digital Salinometer is a handheld optical instrument engineered for rapid, field-deployable salinity quantification in aqueous solutions using the principle of refractive index measurement. Based on Snell’s law and calibrated against standardized NaCl reference solutions, the device correlates refractive index shifts—induced by solute concentration—to salinity values expressed as weight/weight percentage (% w/w NaCl). Its compact, ergonomic design and integrated automatic temperature compensation (ATC) enable reliable operation across variable ambient conditions, from coastal monitoring stations to food processing lines and aquaculture facilities. Unlike benchtop refractometers requiring sample thermostating, the XDRS-028 delivers repeatable results without external calibration fluids or manual temperature correction, making it suitable for routine quality control (QC), environmental sampling, and R&D applications where portability and speed are critical.
Key Features
- High-resolution backlit LCD display providing direct digital readout of salinity (0–28% w/w NaCl) with 0.1% resolution
- Integrated thermistor-based temperature sensor with real-time ATC (5–40 °C), compensating refractive index drift per ISO 2173:2003 guidelines
- Robust, lightweight housing (120 × 56 × 36 mm; 120 g) optimized for one-handed operation and extended field use
- Non-destructive, single-drop measurement requiring only 0.5–1.0 mL sample volume
- Low-power consumption enabling >10,000 measurements per battery set (2 × AAA, included)
- IP65-rated front panel for resistance to dust and incidental water exposure during outdoor deployment
Sample Compatibility & Compliance
The XDRS-028 is validated for homogeneous, non-viscous to moderately viscous aqueous salt solutions—including natural seawater, brine, pickling solutions, and food-grade saline matrices such as tomato paste, mayonnaise, and fermented sauces. It is not intended for emulsions with suspended particulates, highly turbid samples, or organic solvent-based systems. Calibration is traceable to NIST-traceable NaCl standards (certified reference materials, CRM 8435). The instrument complies with ASTM D1141-98 (Standard Practice for Marine Water Simulated) for salinity reporting conventions and supports GLP-compliant workflows via timestamped data export. While not FDA 21 CFR Part 11–certified out-of-the-box, audit-ready data logs can be generated when paired with Itioture’s optional USB-C interface and compliant PC software.
Software & Data Management
Data output is supported via USB-C connection to Windows/macOS systems using Itioture’s free SalinityLink™ desktop application (v3.2+). The software enables batch export to CSV/Excel, configurable pass/fail thresholds, statistical summary (mean, SD, CV%), and time-stamped measurement history with operator ID tagging. All stored records include embedded metadata: ambient temperature, instrument serial number, calibration date, and user-defined sample ID. Raw refractive index (nD) values are also logged alongside % w/w NaCl equivalents, facilitating method validation and cross-platform correlation studies. Firmware updates and calibration certificate reissuance are managed through the same interface, ensuring long-term metrological integrity.
Applications
- Marine and estuarine environmental monitoring (e.g., salinity profiling in mangroves, tidal pools, and desalination intake zones)
- Food & beverage QC: verification of brine concentration in canned vegetables, fish sauce, soy sauce, and dairy-based dressings
- Aquaculture management: real-time adjustment of hatchery water salinity for larval development stages
- Pharmaceutical excipient preparation: monitoring isotonic saline solution consistency prior to sterilization
- Educational laboratories: hands-on demonstration of colligative properties and refractive index–concentration relationships
FAQ
How does the XDRS-028 achieve automatic temperature compensation?
The unit employs a high-stability thermistor adjacent to the prism surface, measuring sample temperature at the point of optical interaction. Internal algorithms apply empirically derived polynomial corrections aligned with ISO 2173 temperature-salinity refractivity models.
Can the XDRS-028 measure seawater beyond 35 ppt?
No—the calibrated range is strictly 0–28% w/w NaCl (equivalent to ~280 g/L or ~280 ppt), optimized for hypersaline industrial brines and processed foods. Natural seawater (~3.5% w/w) falls well within its optimal accuracy band.
Is recalibration required between samples?
A single-point calibration using deionized water (0% reference) is recommended before each measurement session; no recalibration is needed between consecutive samples of similar matrix.
What maintenance is required for long-term accuracy?
Daily prism cleaning with lens tissue and analytical-grade ethanol; annual verification against certified NaCl standards is advised for GLP-regulated environments.
Does the device support Bluetooth or wireless data transfer?
Not natively—data transmission is conducted via wired USB-C only, ensuring signal integrity and eliminating RF interference risks common in laboratory electromagnetic environments.
