Specific Gravity Test Lab in Madurai | Jancy Labs
NABL Accredited Laboratory (Certificate No. TC-12176) as per ISO/IEC 17025:2017
Your soil's specific gravity affects every foundation, fill, and compaction decision on site. Consequently, getting it wrong means approvals stall and projects delay. Jancy Labs provides Specific Gravity of Soil testing in Madurai as per IS 2720 Part 3 Section 1 — delivering reports accepted by NHAI, PWD, and PMGSY.
Jancy Labs provides Specific Gravity of Soil testing in Madurai as per IS 2720 Part 3 Section 1. Furthermore, our NABL accredited lab (TC-12176) delivers reports accepted by NHAI, PWD, and PMGSY. Get your Specific Gravity test done today →
Page Contents — Quick Links
What Is Specific Gravity of Soil?
The Specific Gravity test tells you the ratio of soil particle density to water density. Consequently, this foundational value helps your geotechnical team calculate void ratio, porosity, and degree of saturation.
Without this value, however, soil classification and compaction design remain incomplete.
Furthermore, submitting an incomplete soil test report to NHAI or PWD can delay your project approval by weeks.
Specific Gravity Formula — IS 2720 Part 3
Where W₁ = mass of empty pycnometer · W₂ = pycnometer + dry soil · W₃ = pycnometer + soil + water · W₄ = pycnometer + water only. All masses recorded at constant temperature per IS 2720 Part 3 Section 1.
Typical Specific Gravity Values for Indian Soils
Your measured value is compared against expected ranges to validate soil type and flag anomalies:
| Soil Type | Typical Specific Gravity (G) | Design Relevance |
|---|---|---|
| Sand | 2.63 – 2.67 | Granular fill and sub-base void ratio calculations |
| Silt | 2.65 – 2.70 | Subgrade saturation and settlement analysis |
| Inorganic Clay | 2.70 – 2.80 | Foundation sizing and consolidation design |
| Organic Soil | Below 2.00 | Flags unsuitable fill material requiring replacement |
A value falling outside the expected range for your soil type signals either organic content, sample contamination, or a testing error — which is why accredited testing matters.
Applicable Standards
IS 2720 Part 3 Section 1
Prescribes the exact procedure, equipment calibration, and calculation method for this test. Consequently, any deviation from this standard invalidates the result for government project submissions. Therefore, Jancy Labs conducts Specific Gravity testing strictly as per IS 2720 Part 3 Section 1 — no shortcuts, no approximations.
Independently Verifiable Accreditation
Our NABL accreditation under ISO 17025:2017 means every result carries independent third-party verification. Our scope and calibration status are verifiable on the NABL India portal → under Certificate TC-12176.
Why This Test Matters
- Foundation design depends on it: Specifically, void ratio and porosity calculations critical for foundation sizing require a verified Specific Gravity value.
- Proctor test precision: Additionally, without accurate Specific Gravity, your Maximum Dry Density from the Proctor test loses its precision.
- Fine-grained soil classification: Furthermore, IS classification of fine-grained soils directly relies on Specific Gravity for degree-of-saturation calculations.
- Complete test packages required: Consequently, Panchayat Raj Engineering and NABARD-funded projects require complete soil test packages, including Specific Gravity.
- Costly downstream errors: Moreover, an incorrect Specific Gravity value cascades into wrong fill design, wrong settlement predictions, and ultimately expensive site corrections.
⚠️ Skipping the Specific Gravity test — or using an unaccredited result — therefore risks rejection of your entire soil test report by the approving authority. View all Soil Testing Services →
Why Choose Jancy Labs for Specific Gravity Testing?
We run Specific Gravity testing on a calibrated pycnometer setup maintained specifically for IS 2720 Part 3 compliance. Furthermore, this is not a shared, multi-purpose instrument — it is dedicated entirely to this test.
- Calibrated pycnometer and constant-temperature water bath — dedicated specifically to Specific Gravity testing.
- Specific Gravity test conducted strictly as per IS 2720 Part 3 Section 1 — consequently, no procedural shortcuts.
- Every Specific Gravity report is therefore signed and reviewed by a Materials Engineer.
- Additionally, Jancy Labs holds NABL accreditation — Certificate TC-12176 under ISO 17025:2017.
- Furthermore, reports are accepted by NHAI, PWD, and PMGSY for road and infrastructure projects.
- Moreover, contractors and consultants across Tamil Nadu trust Jancy Labs for Specific Gravity testing.
Our NABL accreditation under ISO 17025:2017 means every result carries independent third-party verification. Additionally, this accreditation is what makes our reports accepted by government departments. See our NABL accreditation → · Talk to our team today →
How To Get Your Test Done
Send Sample With Covering Letter
Contact our team to confirm the exact quantity for your soil type before dispatch. Seal your sample securely in a double-sealed polythene bag inside a rigid container.
We Test It
Your sample is logged, air-dried, and tested on our calibrated pycnometer with de-aired water at constant temperature per IS 2720 Part 3 Section 1.
You Receive Your Certified Report
Collect directly from our Madurai laboratory or receive by courier — with the NABL stamp and Materials Engineer signature.
Our Specific Gravity Test Process
- First, the sample is received, logged, and assigned a unique ID on arrival.
- Subsequently, the soil sample is air-dried and prepared as per IS 2720 Part 3 requirements.
- Next, the pycnometer is cleaned, dried, and its mass recorded accurately.
- Then, the soil sample is introduced into the pycnometer and de-aired thoroughly.
- Furthermore, the pycnometer is filled to the mark with de-aired water at constant temperature.
- Subsequently, mass readings are taken at each stage — soil, pycnometer, and water.
- Consequently, Specific Gravity is computed using the standard IS 2720 Part 3 formula.
- Finally, the result is reviewed for repeatability and signed off by a Materials Engineer before dispatch.
Frequently Asked Questions
How long does a Specific Gravity test take at Jancy Labs?
Can I send my soil sample by courier to Jancy Labs?
Is your Specific Gravity report accepted by NHAI and PWD?
Do you test Specific Gravity for different soil types?
How much soil sample do I need to send for a Specific Gravity test?
Get Your Specific Gravity Test Report from a NABL Accredited Lab
Your Specific Gravity result is the starting point for every compaction and foundation decision on site — don't let an unaccredited report hold up your project approval. Send your sample to Jancy Labs today.
| 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 – Saturday, 10:00 AM – 6:00 PM |
Request Your Specific Gravity Test
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 3): Methods of Test for Soils, Determination of Specific Gravity.
- National Accreditation Board for Testing and Calibration Laboratories (NABL) — verify Jancy Labs' accreditation scope under Certificate TC-12176.
- National Highways Authority of India (NHAI) — subgrade soil characterisation requirements for highway project approval.
- Ministry of Road Transport & Highways (MoRTH) — Specifications for Road and Bridge Works governing soil test packages.
- Indian Roads Congress (IRC) — IRC:37 flexible pavement design guidelines referencing subgrade soil properties.
- PMGSY — Pradhan Mantri Gram Sadak Yojana — rural road soil investigation and quality control requirements.
- NABARD — rural infrastructure funding requirements including complete geotechnical test packages.