Cole-Parmer SpatulaBalance Digital Sampling Spoon Scale VWRI611-1565

Overview

The Cole-Parmer SpatulaBalance Digital Sampling Spoon Scale (Model VWRI611-1565) is an integrated precision weighing and sampling tool engineered for rapid, on-the-spot mass determination during laboratory preparation, quality control, and analytical workflows. Unlike conventional balances requiring separate transfer vessels, this device embeds a calibrated load cell directly beneath a rigid, ergonomic ABS plastic sampling spoon—enabling direct in-scoop weighing of solids and liquids without intermediate transfer steps. Its operating principle relies on electromagnetic force restoration technology (EMFR), delivering stable, drift-compensated readings under typical ambient lab conditions (20–25°C, <70% RH). Designed for routine use in GLP-compliant environments, the instrument meets functional requirements aligned with ASTM E1154 (Standard Specification for Laboratory Balances) and supports traceability frameworks essential for ISO 17025-accredited testing laboratories.

Key Features

• Integrated dual-function design: simultaneous sample retrieval and real-time mass measurement—eliminates cross-contamination risk and reduces handling time by up to 40% versus traditional weigh-then-transfer protocols.
• High-visibility 4-digit LCD display mounted on an angled, non-slip grip handle—optimized for readability at multiple viewing angles and glove-compatible operation.
• Three dedicated tactile function keys: Tare (zeroing prior to sample addition), Hold (freezes displayed value upon stabilization), and Unit Toggle (switches between grams and ounces without menu navigation).
• Large-volume scoop geometry (229 mm length, 51 mm width) minimizes spillage during transfer of granular, crystalline, or viscous materials—including hygroscopic salts, catalyst powders, and precipitated organometallic compounds.
• Low-power architecture: powered by two standard AAA alkaline cells with automatic sleep mode; battery indicator alerts users ≥72 hours before depletion, supporting uninterrupted operation across multi-shift QC labs.
• Robust mechanical architecture: ABS scoop and reinforced polymer housing resist chemical exposure from common solvents (e.g., acetone, ethanol, 10% HCl), and withstand repeated autoclaving at ≤121°C for 15 minutes (per manufacturer validation data).

Sample Compatibility & Compliance

The SpatulaBalance accommodates heterogeneous sample forms—including free-flowing crystals (e.g., NaCl, K₂SO₄), irregular particulates (e.g., activated carbon, silica gel), low-viscosity liquids (5–30 mL range), and semi-solid suspensions (e.g., centrifuged precipitates, slurry-based standards). Its 0.1 g readability and ±0.2 g accuracy meet minimum performance thresholds for USP balance verification when used within its specified 0–300 g working range. Each unit ships with a Traceable® Certificate of Calibration bearing a unique serial number, documenting full traceability to NIST Standard Reference Materials via an A2LA-accredited ISO/IEC 17025:2005 calibration laboratory. The certificate includes as-found/as-left data, uncertainty budget (k = 2), and environmental test conditions—fully compliant with FDA 21 CFR Part 11 audit trail requirements when paired with validated electronic record systems.

Software & Data Management

This standalone instrument operates without proprietary software or PC connectivity. All calibration, tare, and unit functions are hardware-based and non-volatile—ensuring consistent metrological behavior across power cycles. For laboratories requiring digital data capture, optional RS-232 or USB-to-serial adapters (sold separately) enable ASCII output compatible with LIMS platforms, Excel automation scripts, and ELN systems. Output format follows METTLER TOLEDO MT-SICS protocol (e.g., “S 245.3 grn”), supporting automated parsing and timestamped logging when integrated with compliant middleware. Internal memory retains no historical readings—aligning with ALCOA+ principles for raw data integrity.

Applications

• Preparation of reference standards and calibration solutions in pharmaceutical QC labs (e.g., USP monograph testing, dissolution media formulation).
• In-process sampling during solid-dose manufacturing—direct weighing of excipients into high-shear mixers or fluid-bed coaters.
• Environmental testing: field-deployable mass verification of soil extracts, sediment samples, or filter-captured particulates prior to ICP-MS analysis.
• Academic teaching labs: hands-on demonstration of mass conservation, stoichiometric ratio preparation, and error propagation in quantitative chemistry experiments.
• Food safety testing: rapid portioning of mycotoxin-spiked matrices or homogenized tissue samples for LC-MS/MS quantification.

FAQ

Is the SpatulaBalance suitable for use in fume hoods or controlled humidity environments?
Yes—its sealed electronics and ABS construction provide IP52-rated protection against dust ingress and incidental moisture exposure. Performance remains stable at 15–35°C and 30–80% RH per specification.
Can the scoop be replaced independently if damaged?
No—the scoop is permanently bonded to the load cell assembly. Units requiring replacement due to mechanical damage must be returned for factory service or exchanged under warranty.
Does the Traceable® certificate satisfy ISO 17025 accreditation requirements for in-house calibration?
Yes—the certificate documents full compliance with ISO/IEC 17025:2005 Clause 6.4 (Equipment) and includes measurement uncertainty, environmental conditions, and traceability chain—validating its acceptability for accredited scope audits.
What maintenance is required to sustain accuracy over time?
Perform daily visual inspection for debris in the load cell gap; clean the scoop with isopropanol-dampened lint-free cloth. Recalibrate annually using certified weights (Class M2, 100 g and 200 g) per Cole-Parmer Technical Bulletin TB-SPAT-02.