📋 Workflow
Full workflow, products add-to-cart directly1
Air-dry & sieve
2 dAir-dry, remove debris and sieve the soil sample through appropriate mesh
💡 Tip Avoid metal contact to prevent contamination
⚠️ Caution Different sieves for different parameters
🧪 Materials for this step (click to shop by spec/brand)
2
pH & physicochemical
30 minPrepare soil-water extract to measure pH and conductivity
💡 Tip Soil-water ratio usually 1:2.5
⚠️ Caution Shake thoroughly then settle
🧪 Materials for this step (click to shop by spec/brand)
3
Heavy metal digestion
60 minDigest soil with HNO₃–HCl by microwave for metal determination
💡 Tip Digest until clear and complete
⚠️ Caution Control pressure and temperature
🧪 Materials for this step (click to shop by spec/brand)
4
Organic matter/pollutants
60 minDetermine organic matter or extract organic pollutants by appropriate methods
💡 Tip Dichromate oxidation is common
⚠️ Caution Store extracts away from light
🧪 Materials for this step (click to shop by spec/brand)
5
Data & report
30 minCalculate each parameter on dry basis and compare to assessment standards
💡 Tip Correct for soil moisture
⚠️ Caution Note the assessment basis
🧪 Materials for this step (click to shop by spec/brand)
⚠️ 5 Common Beginner Mistakes
- ① Incomplete drying affecting moisture-relative results
- ② Cross-contamination between samples
- ③ Sieve mesh not per standard
- ④ Incomplete digestion lowering metals
- ⑤ Matrix variability affecting reproducibility
❓ FAQ
+Avoiding soil contamination?
Avoid metal tools and sources during sampling/storage.
+Which sieve?
2mm for pH; 0.15/0.25mm for heavy metals.
+Dry or wet basis?
Measure moisture and report on dry basis.