Calculator inputs
Example data table
| Scenario | Samples | Matrix | Turnaround | Estimated total (illustrative) |
|---|---|---|---|---|
| Bid estimate for refurbishment survey | 8 | Air | Standard | USD 1,700.00 |
| Fast-track closeout documentation | 12 | Bulk | 24 hours | USD 4,500.00 |
| Remediation confirmation package | 20 | Wipe | 48 hours | USD 6,200.00 |
Formula used
The calculator estimates a total by summing per-sample work and fixed fees, then applying management, contingency, discounts, and tax.
Prep = Qty × PrepRate
Travel = (Mileage × MileageRate) + (TravelHours × HourlyRate)
Direct = Analysis + Prep + QA + Reporting + CoC + Mobilization + Courier + Equipment + Travel
PM = Direct × PM%
Subtotal = Direct + PM
Contingency = Subtotal × Contingency%
Subtotal2 = Subtotal + Contingency
Discount = Subtotal2 × Discount%
Tax = max(0, Subtotal2 − Discount) × Tax%
Total = max(0, Subtotal2 − Discount) + Tax
How to use this calculator
- Enter the number of samples and choose the sample matrix.
- Select turnaround to reflect schedule urgency.
- Keep base and prep blank for suggested defaults, or override them.
- Add logistics costs like courier, mobilization, and travel if needed.
- Set management, contingency, discount, and tax to match your bid rules.
- Press Calculate cost and review the breakdown above.
- Export the results using CSV or PDF for sharing.
Project note: budgeting TEM sample work in construction
1) Why TEM testing is specified
Transmission electron microscopy (TEM) is often required when projects involve regulated fibers, dust, or verification sampling. Owners and consultants use TEM results to document compliance and to support clearance decisions, especially when risk tolerance is low.
2) What typically drives cost
Sample quantity is the main driver, because both analysis and preparation scale per sample. Matrix affects labor: air filters usually prep faster than bulk or water. The calculator separates base analysis and prep rates so you can mirror a lab price sheet and keep assumptions visible.
For planning, base analysis is often budgeted around 150–350 per sample, with prep commonly 25–100. Fixed fees (QA/QC, reporting, chain-of-custody) may look small, but they can dominate totals on very low sample counts. Itemized estimates make vendor comparisons clearer.
3) Turnaround premiums and schedule pressure
Urgent reporting can materially change budgets. This tool applies a turnaround multiplier to the base analysis component (standard = 1.00, 48 hours = 1.25, 24 hours = 1.50, same day = 2.00). If your vendor prices urgency as a flat fee instead, place it in reporting or mobilization.
4) Logistics, documentation, and field coordination
Real projects include chain-of-custody handling, QA/QC review, courier costs, and sometimes travel. For remote sites, mileage and hourly travel time can exceed prep fees. Keeping these as separate line items supports transparent change orders and cleaner procurement comparisons.
5) Using results for bids and client approvals
Use the breakdown to justify allowances: direct costs, then project management, contingency, discounts, and tax. Project management is often 5–12% when coordination is required. Contingency often sits at 3–10% for stable scope, rising to 15% when access or sample counts are uncertain. Export CSV for estimating sheets and PDF for bid packages.
FAQs
1) Is this a lab quotation?
No. It is a budgeting estimate. Replace the base and prep rates with your lab’s current price list and include any project-specific fixed fees.
2) Why does turnaround affect only the analysis portion?
Many labs price urgency primarily on instrument and reporting priority. If your vendor applies urgency to other items, add the premium as a separate fee.
3) What should I enter for “matrix”?
Select the closest match: air, bulk, wipe, water, or other. Matrix influences default rates because preparation effort differs between sample types.
4) How do I model travel for a distant site?
Enter mileage and a mileage rate, then add travel hours and an hourly rate if staff time is billable. This keeps logistics visible in the total.
5) Where do I include packaging, PPE, or special consumables?
Use “Equipment / consumables” for items like filters, cassettes, PPE, and specialty supplies that aren’t already included in the lab’s per-sample rate.
6) How should I choose contingency and discount?
Contingency covers uncertainty and rework risk; 3–10% is common for stable scope. Apply discounts only after confirming volume tiers or contract terms.
7) Can I share results with a client?
Yes. Use the PDF download for a clean summary and the CSV for internal estimating. Always label the output as an estimate pending scope and lab confirmation.