Stability samples · relocation & excursions

THE CHAMBER
MOVED.
DID THE STUDY?

Maintenance, a power failure, a move to the basement for four days. Every relocation of stability samples ends with the same two questions on the form: were the storage conditions maintained, and is this a critical deviation? This calculator answers both - and shows you why.

Calculate a relocation → Introduction
5Steps in the SOP
±2°CTemperature window
±5% RHHumidity window
2Sample groups assessed

Calculated storage conditions

Four days in the basement are not four days lost. They are four days diluted by every month the samples spent in the chamber.

01

Target conditions

Chamber, set temperature and humidity, removal and return date, shortest and longest storage age.

Chamber · 25 °C / 60 % 02

Relocation conditions

Where the samples went, at what temperature and humidity, and for how many days.

Basement · 18 °C · 4 d 03

Calculated conditions

Both locations weighted by the time spent in each, averaged for the youngest and the oldest samples.

24.9 °C / 25.0 °C 04

Requirement

The calculated values must stay within ±2 °C and ±5 % RH of the set point.

23-27 °C · 55-65 % 05

Assessment

Conditions maintained: yes or no. Customer information required: yes or no. Signed and dated.

Maintained · no notice

Lab 01 · Interactive

THE RELOCATION
CALCULATOR

Enter the set point, the relocation and the storage age of the samples. The youngest group is always assessed; the oldest group is optional. Every value on the right follows from one line of arithmetic: each location weighted by the days spent there.

Calculator Calculated storage conditions · relocation CHAMBER → BASEMENT19 DEC → 23 DEC 2024
1 · Target conditions set point
25.0 °C
60 % RH
2 · Relocation event
4 days
18.0 °C
60 % RH
Storage age sample groups
5 months
18 months
Time-weighted balance shortest group
Where the days went 5 months · 150 days
4 · Requirement ±2 °C · ±5 %
5 · Assessment SOP
Conditions maintained
Storage conditions maintainedYESNO
Customer information requiredYESNO
Headroom · youngest samples -

Lab 02 · Drag the point

HOW FAR,
AND FOR HOW LONG?

Every relocation is a point on this map: its temperature and its duration. The green field is everything the youngest samples can absorb; the curves show where older samples would still pass. Drag the point - Lab 01 follows.

Tolerance map Relocation temperature × duration 18.0 °C · 4 d
Show limit for
Arrow keys move the point when the map is focused

Lab 03 · Scrub the curve

WHY THE YOUNGEST SAMPLES
DECIDE

The same four days weigh heavily on a sample stored for one month and almost nothing on one stored for six years. That is why the SOP checks the shortest and the longest storage age, and why the shortest one nearly always sets the verdict.

Storage age Calculated condition against storage age cursor 12 months
Drag across the chart · arrow keys when focused

Documentation

THE FORM
FILLS ITSELF IN

The record below follows the five sections of the SOP form, line by line, and updates with every change above. Print it for the file, or copy the summary into your own system.

Alphalytik
LB-CHAMBER-20241219
Calculated storage conditions
V1

Calculated storage conditions

Chamber · 19 Dec 2024 - 23 Dec 2024

1 · Target storage conditions

2 · Storage conditions during relocation

3 · Calculated storage conditions*

* Calculated for the shortest and the longest storage age under target conditions, including the time spent at the relocation site. The conditions at both locations are weighted by the time spent there and averaged.

4 · Requirement

ParameterRequirementCalculatedResult

5 · Assessment

prepared by · date
reviewed by · date
signature

Contact

Send us the logger file.
We send back the record.

Tell us where the samples were, for how long, and how old they are. We return the calculated conditions, the assessment and the customer statement - signed, under GMP.

info@alphalytik.com → +49 30 293809-0
LaboratoryGrünberger Straße 44A
City10245 Berlin, Germany
Managing directorDr. Nicolas Schauer
GroupPart of CERTANIA
LinkedInAlphalytik Pharmaservice GmbH