---
title: Find the Consumable That Limits a Classroom Trial — Free
description: Calculate whole trials from each consumable and use the smallest capacity as the class limit. A surplus of paper strips cannot replace missing sample cups.
category: learning
last_verified: 2026-09-27
freshness: green
published: 2026-09-27
canonical_url: https://gratis-ai.pages.dev/articles/teaching-lab-consumable-trial-capacity.html
companion_app_url: https://gratis-ai.pages.dev/apps/teaching-lab-consumable-trial-capacity.html
reading_time_minutes: 4
tags: learning, lab, local-first, planning, no-account
---

# Find the Consumable That Limits a Classroom Trial — Free

Calculate whole trials from each consumable and use the smallest capacity as the class limit. A surplus of paper strips cannot replace missing sample cups.

**Free and complete.** This guide is a standalone free tool — no account, no card, anywhere. The only paid option is one optional extra outcome: $4 one-time. Nothing in the free tier is gated.

## Who it's for

Anyone seeking practical 100% free AI workflows — no paid API keys, credit cards, or subscriptions

## What's free

- one complete reagent aliquot run in the app
- three samples plus unlimited article-demo runs
- unwatermarked result text and an explicit, user-triggered state link

## Optional paid add-on

**$4 one-time.**

- print the reagent aliquot with its row workings
- CSV of complete trials and row explanations
- last five readings saved in this browser profile

## Sources & verification

- Tool: GratisAI local-first instrument (no key, no account)
- Primary source: the free tool itself (local-first, no external dependency)
- Last verification: 2026-09-27 (green)

## Use it

- Interactive guide: https://gratis-ai.pages.dev/articles/teaching-lab-consumable-trial-capacity.html
- Companion app: https://gratis-ai.pages.dev/apps/teaching-lab-consumable-trial-capacity.html
- This machine-readable mirror: /mirrors/teaching-lab-consumable-trial-capacity.md

*Generated free at https://gratis-ai.pages.dev/articles/teaching-lab-consumable-trial-capacity.html — every guide on GratisAI is a complete, working tool. $0, no account, no card, anywhere.*