NABL Accredited · Equipment Calibration
Curing Tank Calibration(IS 516 — 27±2°C Verification)
Calibration of concrete curing tanks — water temperature mapping against the IS 516 requirement of 27±2°C with traceable sensors, including circulation and heater-control verification.
27±2°C
IS 516 Requirement
2–4 Days
Report TAT
NABL
Accredited
NABL Accredited Lab · ISO/IEC 17025:2017
Digital Reports via Autovity QLMS
Pan-India · 7 Lab Locations
Est. 2009 · 20,000+ Projects
Overview
What is Curing Tank Calibration?
Cube strength is a function of curing temperature — the entire acceptance system assumes specimens cured at 27±2°C per IS 516. Tanks drift: heaters fail quietly, circulation dies, corners run cold in winter and hot near elements — and a non-compliant tank silently biases every cube through it.
Global Lab maps tank water temperature at multiple positions and depths with NPLI-traceable sensors over a representative period, verifies controller set-point and circulation effectiveness, and certifies compliance with the IS 516 band — with drift comparison against previous records.
Reviewed by Mahemood Ahmad, Lab Manager — NABL Accredited Laboratory, Global Lab India
NPLI-Traceable References
Reference standards with unbroken traceability to national standards.
ISO/IEC 17025 System
Calibration under our accredited laboratory quality system.
Position + Depth Mapping
Cold corners and stratification caught, not averaged away.
Fast Turnaround
Certificates in 2–4 days — minimal instrument downtime.
As-Found / As-Left Data
Both states recorded, so drift since last calibration is visible.
Digital Certificates
Calibration certificates via the Autovity QLMS dashboard.
Test Procedure
How the Curing Tank Calibration is Conducted
- 1
Sensor Placement
Traceable sensors are positioned at defined locations and depths across the tank. - 2
Logging Period
Temperatures are logged over a representative period covering heater cycles. - 3
Controller Verification
Set-point accuracy and switching behaviour are verified against reference readings. - 4
Evaluation
Spatial and temporal spread is evaluated against the 27±2°C band. - 5
Certification
Mapping results and compliance verdicts are issued via Autovity QLMS.
Standards & Specifications
Applicable Test Standards
| Standard | Title | Scope | Type |
|---|---|---|---|
| IS 516 (Pt 1/Sec 1):2021 | Hardened Concrete — Compressive Strength — Testing of Moulded Specimens | Curing Requirement (27±2°C) | Indian Standard |
| ISO/IEC 17025:2017 | Competence of Testing and Calibration Laboratories | Calibration System | International |
Applications
Where is the Curing Tank Calibration Used?
Concrete lab curing tanks (NABL scope)
RMC plant cube rooms
Site laboratory curing arrangements
Precast plant QC curing systems
Winter/summer seasonal verification
Dispute investigation on strength variance
Why Choose Global Lab
Our Advantages
Audit-Ready CertificatesFormats aligned to NABL assessment and customer audit expectations.
Measured Uncertainty StatedEvery certificate reports measurement uncertainty, not just readings.
Drift VisibilityAs-found/as-left records expose instruments drifting out of tolerance.
Lab + On-Site OptionsSite calibration available for fixed or heavy equipment.
Reminder TrackingDue-date tracking so recalibration is never missed.
Digital ReportingCertificates delivered via the Autovity QLMS dashboard.
Quick Answers
Frequently Asked Questions
What standard governs the Curing Tank Calibration?
Curing Tank Calibration is tested per IS 516 (Pt 1/Sec 1):2021 and ISO/IEC 17025:2017.
How long does the Curing Tank Calibration take?
Reports are typically issued within 2–4 Days of sample receipt at the lab, delivered digitally via the Autovity QLMS client dashboard.
Where is the Curing Tank Calibration used?
It is commonly used for concrete lab curing tanks (NABL scope), and for RMC plant cube rooms.