Sieve Analysis Testing Lab | Jancy Labs
NABL Accredited Laboratory (Certificate No. TC-12176) as per ISO/IEC 17025:2017
Your subgrade soil needs to be classified before a single layer of pavement goes down. Jancy Labs provides sieve analysis testing as per IS 2720 — fast, accurate, and NABL certified under TC-12176. Our gradation reports are accepted by NHAI, PWD, and PMGSY without re-testing delays.
Jancy Labs provides sieve analysis testing as per IS 2720 — fast, accurate, and NABL certified under TC-12176. Furthermore, our gradation reports are accepted by NHAI, PWD, and PMGSY without re-testing delays. Get your sieve analysis done today →
What Is Sieve Analysis?
Sieve analysis tells you the particle size distribution of a soil sample — the essential data that determines whether your material qualifies as sub-base, fill, or embankment.
Therefore, this test is conducted on every soil-bearing layer before road construction, foundation work, or earthwork quality approval.
Consequently, skipping it — or using an unaccredited report — can trigger rejection at quality audits and delay project handover.
IS Standard Sieve Sizes Used in Soil Gradation
Jancy Labs uses calibrated IS standard sieves across the full gradation range required for soil and granular material classification:
| IS Sieve Size | Fraction Classified | Typical Application |
|---|---|---|
| 80 mm – 20 mm | Coarse Gravel | GSB, WBM, and embankment fill grading |
| 20 mm – 4.75 mm | Fine Gravel | Sub-base and base course gradation envelopes |
| 4.75 mm – 75 micron | Sand Fraction | Subgrade suitability and fill classification |
| Passing 75 micron | Silt & Clay (Fines) | Triggers Atterberg limits testing for fine-grained soils |
Where fines content is significant, wet sieving is performed and Atterberg limits testing is recommended to complete the soil classification.
Applicable Standards
IS 2720 (Part 4)
Grain Size Analysis — specifies sample preparation, sieve sizes, shaking duration, and reporting format for Indian construction projects. Additionally, Jancy Labs conducts this test strictly as per IS 2720 — no deviation, no shortcuts.
Accredited & Verifiable
Our accreditation scope and sieve calibration status are independently verifiable on the NABL India portal → under Certificate TC-12176, ISO/IEC 17025:2017.
Why Sieve Analysis Matters for Your Project
- Road sub-base approval: NHAI and PWD mandate sieve analysis before certifying granular sub-base (GSB) and WBM layers.
- Pavement layer compatibility: Gradation curves determine whether layers bond correctly — therefore preventing rutting and premature failure.
- Foundation suitability: CPWD and TNPWD projects require particle size data to classify soil bearing capacity zones.
- Railway earthwork compliance: Southern Railway and RVNL projects need graded soil certification before ballast placement begins.
- Borrow area qualification: NABARD-funded rural infrastructure projects require sieve analysis reports before earthwork contractors mobilise.
⚠️ Proceeding without a valid sieve analysis report risks rejection of your soil layers during third-party quality audits — resulting in costly rework and schedule delays. View all soil testing services →
Why Choose Jancy Labs for Sieve Analysis
Your sieve analysis results are only as reliable as the sieves, the shaker, and the lab behind them.
- Calibrated IS standard sieves and mechanical sieve shaker — verified for accuracy before every test batch.
- Sieve analysis conducted strictly as per IS 2720 (Part 4) — no abridged procedures.
- Sieve analysis reports signed by a qualified Materials Engineer.
- NABL accredited testing laboratory — TC-12176 | ISO 17025:2017.
- Reports accepted by NHAI, PWD, and PMGSY without re-testing requirements.
- Trusted for sieve analysis by highway and rural infrastructure project engineers across Tamil Nadu.
Moreover, our accreditation ensures every result is traceable, reproducible, and audit-ready. See our NABL accreditation → · Talk to our team today →
How to Get Your Sieve Analysis Done
Send 5 kg Samples
Send your soil sample with a covering letter. Pack in double-sealed airtight bags, labelled clearly with your project name and sample ID.
We Test It
Sample is logged, dried, disaggregated, and passed through nested IS standard sieves on a mechanical shaker per IS 2720 (Part 4).
Get Your Certified Report
Receive your gradation report with particle size distribution curve — by courier or collect directly from our Madurai laboratory.
Our Sieve Analysis Process
- Sample received, logged, and assigned a unique sample ID.
- Sample air-dried or oven-dried to constant mass per IS 2720 requirements.
- Soil broken down and clods disaggregated without crushing particles.
- Sample weighed and loaded onto nested IS standard sieves in descending order.
- Mechanical shaker activated for the duration specified in IS 2720 (Part 4).
- Mass retained on each sieve weighed and recorded.
- Percentage retained and cumulative percentage passing calculated for each sieve.
- Grain size distribution curve plotted and soil classified accordingly.
- Results checked against project specification limits where provided.
- Report reviewed, signed, and stamped by a Materials Engineer before dispatch.
Frequently Asked Questions
How long does a sieve analysis test take at Jancy Labs?
Can I send soil samples by courier to Jancy Labs?
Is your sieve analysis report accepted by NHAI and PWD?
Do you conduct both dry and wet sieve analysis at Jancy Labs?
How much soil sample do I need to send for a sieve analysis test?
Get Your Sieve Analysis Report Today
Send your soil sample today and receive a sieve analysis report that your project approvals actually accept. Because every layer matters, delayed testing means delayed project progress — don't wait until your quality audit flags the gap.
| Contact Method | Details |
|---|---|
| 📞 Phone | +91-8680049004 / +91-9994421275 |
| +91-8680049004 | |
| ✉️ Email | jancylabsmdu@gmail.com |
| 📍 Address | No.6, Ganesh Nagar 3rd Street, K.Pudur, Madurai — 625007 |
| 🕐 Hours | Monday to Saturday, 10:00 AM – 6:00 PM |
Request Your Sieve Analysis
Leave your details and our team will call you back to confirm sample quantity and dispatch.
Standards & Authority Reference Sources
- Bureau of Indian Standards (BIS) — official publisher of IS 2720 (Part 4): Methods of Test for Soils, Grain Size Analysis.
- National Accreditation Board for Testing and Calibration Laboratories (NABL) — verify Jancy Labs' accreditation scope under Certificate TC-12176.
- Ministry of Road Transport & Highways (MoRTH) — Specifications for Road and Bridge Works defining GSB, WBM, and WMM gradation envelopes.
- National Highways Authority of India (NHAI) — quality control requirements for granular sub-base and pavement layer acceptance.
- Indian Roads Congress (IRC) — IRC:37 flexible pavement design guidelines referencing subgrade gradation and classification.
- PMGSY — Pradhan Mantri Gram Sadak Yojana — rural road quality control requirements including gradation testing.
- Central Public Works Department (CPWD) — specifications governing soil classification for foundation and earthwork.