Lab Methodology & Transparency
Lab Methodology & Transparency
The Freeze Drying Lab is a real-world process testing and documentation program. WeFreezeDryIt runs tests on actual batches, publishes what is genuinely recorded, and labels every value honestly: measured, calculated, observed, or general guidance. It is not an accredited analytical laboratory, and no result on this site is a certified analysis unless external certified testing was actually performed and reported as such.
How Lab Data Is Produced
Six principles shape every record.
Measurements come from actual batches
Every measured value is recorded from a real run on a real machine, never estimated for the page. If it was not measured, the record says Not recorded.
Some tests are exploratory
A test may be a first attempt at an unusual product or an informal comparison. Exploratory tests are labeled as such, and their results are not over-generalized.
Not all conditions are laboratory-controlled
Batches run in real production and home conditions. Ambient temperature, humidity and other variables are noted when known, but this is not a climate-controlled lab.
Results vary by machine and preparation
A result from one machine, one preparation and one load does not guarantee the same outcome elsewhere. Records state the machine and preparation they used.
Calculations are labeled separately
Anything derived by formula, such as dry yield as a percentage, is shown as a Calculated result and never presented as a raw measurement.
Observations are practical notes
Texture, color, rehydration feel and powder behavior are human observations, not formal sensory-panel data. They are described in plain words and labeled Observed.
The Four Data Categories
Every piece of Lab data carries one of four labels, and the labels are never mixed. A calculated value is never presented as a measurement, an observation is never presented as instrument data, and general guidance is never presented as Lab evidence.
Measured
Directly recorded from an instrument during a real batch. Example: fresh weight 1,000 g, final dry weight 180 g, cycle time 24.5 hours. If it was not measured, the record says Not recorded.
Calculated
Derived by formula from measured values. Example: dry yield 18%, from 180 g dry divided by 1,000 g fresh. Shown as a Calculated result, always visually separate from raw measurements.
Observed
Human assessment during or after the test. Example: crisp throughout, rehydrated evenly in 8 minutes, ground into a fine powder with light clumping. Practical notes, not formal sensory-panel data.
General Guidance
Educational background from the Just Freeze Drying library: how sugars behave, why thickness affects cycle time, what packaging does. Never carries a Lab ID and is never counted as test evidence.
The Lab vs a Scientific Laboratory
The Freeze Drying Lab is a real-world process testing and documentation program. WeFreezeDryIt is not an accredited analytical laboratory. Results published here are not certified-analysis results, and nothing on this site is presented as such. If an external accredited lab ever performs certified testing for us, those results would be clearly identified as External Laboratory Results and kept fully separate from our own measurements. Weight loss from a batch is never called moisture content, water activity or residual moisture: those require genuine laboratory measurement.
Terminology Glossary
The words used across the Lab, defined the way the Lab uses them.
- Measured
- A value read directly from an instrument during a real test: a scale, a machine clock, a temperature probe. This is the raw evidence behind a record.
- Calculated
- A value derived by formula from measured values, such as dry yield percentage (dry weight divided by fresh weight). Calculated never becomes Measured.
- Observed
- A human assessment recorded during or after a test: texture, color, rehydration behavior, powder behavior. Useful practical notes, not instrument data.
- General Guidance
- Educational background drawn from the Just Freeze Drying library and general freeze-drying knowledge. Never presented as Lab data and never given a Lab ID.
- Tested Rehydration Ratio
- A rehydration ratio labeled Tested only where a real, documented rehydration test produced the numbers. The formula: Water Added divided by Dry Food Weight.
- Calculated Starting Rehydration Estimate
- A rehydration figure derived from fresh and dry weights rather than a test. A useful starting point, never labeled Tested.
The Standard Experiment Template
When a real experiment is published, its page follows one standard template so records stay comparable. A future experiment page supports these sections:
On a published record, Measured Data and Calculated Results are always shown as visually separate blocks, so no one can mistake a formula output for a raw reading.
The Minimum Record Standard
A record is only published when all of these hold:
- An identifiable product: what was tested, including variety, recipe or source notes where relevant.
- A genuine experiment: the test really ran, with a real batch behind it.
- A source record: the original batch log, spreadsheet, photo set, video or machine notes the entry is built from.
- At least one meaningful measured or observed result: a weight, a time, a texture, a behavior, a problem. No empty shell pages.
Incomplete historical tests may still be published as Historical Test (Partial Data), and the record explicitly states what was recorded and what was not. A record is never marked Complete when critical results are pending.
The Tested Rehydration Ratio
The Lab's rehydration ratio is Water Added divided by Dry Food Weight. Example format: 100 g of dry food plus 250 g of water gives a ratio of 250 divided by 100, a 2.5:1 ratio. That example describes the formula only and applies to no food.
The label Tested is used only where actual measured data exists from a documented rehydration test. Everywhere else on the site, a rehydration figure is labeled Calculated Starting Rehydration Estimate or General Guidance, never Tested. Right now, no Tested ratio exists on this site.
Corrections & Versioning
Corrections Policy
When an error is found, the value is corrected, dependent calculations are recalculated, and the correction is recorded internally with the date and reason. The test keeps its original Lab ID: a correction never becomes a new test. Re-running the same product for new evidence is a separate, new experiment with its own ID.
Versioning
Material changes to a record are kept in a simple edit history: what changed, when and why. Minor copy edits do not create new versions. The published record always matches the version shown.
Data Confidence Fields
Every record carries a data confidence field. It describes record completeness only, never scientific quality, and is not a score.
Complete Data
The critical fields for this test were captured: weights, times and the main result, with supporting observations.
Partial Data
Some critical fields were recorded but others were missed or lost, and the record says exactly which.
Limited Data
Only a small amount of information was captured, such as a photo set or a single observation. Published only with the limits stated.
Source Records & Privacy
Every published record is built from a real source record: a manual batch log, a spreadsheet, an uploaded report, a photo set, a video or machine notes. Source records are kept private and are never published in full, including for Public records.
Client tests carry one of three privacy levels:
Public
The record can be published with full product and process detail, with all privacy restrictions respected.
Anonymized
The record is published with client identity, location and any identifying details removed.
Private
The record exists in the Lab archive but is never published. Client information is never exposed automatically.
Client information is never exposed automatically. Proprietary recipes, ingredient ratios, production pricing and client identities are never disclosed unless the client approves that specific disclosure in writing.