100-Point Model

Comparative index of greenness (G-CI)

Score analytical methods against green chemistry principles: ten equally weighted criteria (100 points) with ±2 adjustments, plus G-CI solvent sustainability.

Solvent table

Unlimited rows — completely empty rows are ignored when calculating.

G-CI — solvent inputs

Solvent name	Volume (mL)	Number of pictograms	Signal word

Scoring criteria (100 points)

Select the best match for each criterion. Criterion 5 is computed automatically from the solvent table.

Criteria 1–5

1. Type of analytical method (10)

2. Extraction technique (10)

3. Pre-steps (synthesis / pretreatment) (10)

4. Sample size (mg or µL) (10)

5. Solvent sustainability (10)

Computed automatically from the solvent rows above using the number of pictograms, signal word, and solvent volume.

Criteria 6–10

6. Total waste generated (10)

7. Waste treatment (10)

8. Operator safety & emissions (10)

9. Throughput (samples/h) (10)

10. Automation (10)

Additional adjustments

±2 points per item according to the reference table.

Derivatization required (−2)

Off-site analysis (−2)

Bio-source / plant-based materials (+2)

Optimization (DOE / AQbD) (+2)

Multianalyte or multi-parameter (+2)

Assessment name (optional)

Shown in the combined report. If left blank, “Assessment n” is assigned.

Add method Show comparison