Cerillo STRATUS User manual
Quick Start Guide
STRATUS
Your new Stratus is an L.E.D.-based plate reader used to measure
optical densities in standard plate formats.
Step 1: Get Started. Confirm receipt of all components and device (shown above). The
microSD card may already be installed in the Stratus.
Step 2: Location. Place your Stratus where you’d like to measure. This is anywhere your
samples will be happy – incubator, anaerobic chamber, benchtop, hood, etc.
Step 3: Power the Device.First, insert the microSD card. Then, plug the power adapter into
a standard wall outlet, and the USB cable into the power adapter and the Stratus.
Step 4: Allow for Equilibration. The Stratus needs 60 minutes to equilibrate to new environ-
mental conditions. This can be a good time to do your experimental prep work.
Step 5: Go!(See reverse.)
cerillo.net
Important Notes
1. The Stratus should only be used with the provided USB 2.0 cable. The Stratus is not
compatible with USB 3.x cables.
2. Additional technical information is provided at cerillo.net.
Stratus Components
Stratus (1) microSD card (1) USB Cable (1) Power Adapter (1)
Recommended Protocol for Sample Measurement
For a single read:
1. The Stratus needs calibration after equilibrating to a new environment. Hold down the Stop
(right) button until the status light flashes. Then release it. When the status light turns o, cal-
ibration is finished. The calibration process takes about 3 minutes; do not press any buttons
during calibration.
2. Insert the plate, then press and release the Start (left) button on the Stratus to read your
plate once.
For continuous reads:
Press the Start button and hold until the status light begins to flash white. After a 10 second
delay the Stratus will auto-calibrate and then begin to continuously read. To stop a reading in
progress, press the Stop (right) button until the status light turns red.
Reading your data from the microSD card
Collected measurements are automatically stored on the on-board microSD
card. You can use any commercially available adapter to access the data
from the card. When inserting the card into the Stratus, do so with the Stratus
unplugged; otherwise, the card will not be recognized and future data will not
be recorded.
Data files are stored in order of when your experiment took place (in “YYYYM-
MDD” format). Inside each day’s folder are data files titled by the time the
experiment was started (in “hh-mm-ss” format). These are saved as standard
.csv files, and can be opened in any spreadsheet or data analysis software. The
Stratus’ internal clock is already set to your time zone by Cerillo at the time of
shipment.
Using the Stratus with a Computer
The Stratus can be operated by plugging the provided USB cable into a
computer’s USB port instead of the power adapter. If you would additionally
like to control the Stratus and read its data from that computer, you will have to
download Cerillo software at cerillo.net/software. This software enables direct
control, data access, and configuration of the Stratus.
Support and Troubleshooting
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Start Stop
USB-C microSD
Status Light
Open
White: Booting
Green: Read/Reading
Red: Stop
Dim Yellow: Between Reads
Cyan: Calibrating
Green/White: Continuous Read
Red/White: Calibrate
STRATUS V.
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