
Instructions for UseInstructions for Use
XT Starter
Overview of XT Starter
XT Starter is a stationary device designed for maintaining sample temperatures below 4°C on the bench top
without the use of wet ice, batteries or electricity. Patent-pending dual-phase conductive XT Cooling Core
provides the cooling source when a thermo-conductive CoolRack or CoolSink tube or plate module is placed
on top. The core and sample module in combination ensure uniform well-to-well temperature throughout the
cooling period regardless of sample position. XT Starter can maintain sample temperature from 0.5 to 4oC for
over 4 hours.
Temperature Range Cooling Source Cooling Duration
0.5 to 4oC XT Cooling Core Over 4 hours
Actual performance may vary depending upon CoolRack module employed, sample load, initial sample temperature,
ambient temperature, air currents, and other conditions.
Quick Start
• Remove XT Cooling Core from -20°C freezer and
place on bench
• When temperature strip on XT Cooling Core
registers 1°C, place CoolRack® or CoolSink®
sample module on top of XT Starter
• Load samples in CoolRack or CoolSink modules
IMPORTANT: To ensure your samples do not freeze and to get maximum cooling duration, please refer to the
detailed instructions that follow.
XT Starter Assembly
XT Starter consists of a high-density polyethylene foam holder and a reusable XT Cooling Core. When a
CoolRack or CoolSink tube or plate module is placed on top of XT Cooling Core, the modules and samples
rapidly equilibrate to the temperature of XT Cooling Core. Samples can be placed in the CoolRack or CoolSink
module either before or after the module is placed on top of XT Starter.
To Assemble:
1. Freeze XT Cooling Core in a -20˚C freezer for at least 12 hours.
XT Cooling Core should be stored in -20˚C freezer when not in
use so it is ready when needed. Note: Freezing XT Cooling Core
for less than the specified time may result in decreased cooling
duration.
2. Remove XT Cooling Core from the freezer and place on the
benchtop for approximately 10-15 minutes. When the temperature indicator displays 1oC, XT Cooling Core is ready to use.
Note: Frost will form on the core exterior upon removal from the
freezer; when the frost liquifies, the core is at proper temperature.
3. Remove any condensation with a lab tissue and place
XT Cooling Core into XT holder.
4. Place a CoolRack or CoolSink module onto XT Cooling Core.
5. Load samples.
Caution
• Place XT Starter with sample module in a safe
place on the benchtop to prevent accidental spills.
• Avoid touching the top metal surface of the XT
Cooling Core when removing from freezer.
• Condensation might occur during the cooling
period. Simply wipe with a lab tissue to remove.
Temperature Indicator
XT Cooling Core
(Pre-frozen in -20˚C
freezer)
XT Holder

When using XT Starter to cool samples in a CoolRack using a charged XT Cooling Core
• Remove XT Cooling Core from the freezer and place into holder.
• Place CoolRack or CoolSink module directly onto core and allow to equilibrate to 4oC
(approximately 10-15 minutes).
• Load samples.
When using a pre-chilled (4oC) CoolRack or CoolSink module
• Remove XT Cooling Core from the freezer and place on the benchtop for approximately 10 minutes. When the
temperature indicator displays 1oC, XT Cooling Core is ready to use.
IMPORTANT: Failure to allow XT Cooling Core to reach 1oC may result in sample freezing.
• Place XT Cooling Core into holder.
• Place the pre-chilled CoolRack or CoolSink module of choice onto the core.
• Load samples.
Care and Cleaning
The XT Starter holder is constructed from a cross-linked closed-cell dense polyethylene foam. The material has
excellent resistance to fluid absorption and abrasion. Maximum temperature exposure: 60°C. Avoid prolonged
exposure to UV light sources. All components (XT Holder and XT Cooling Core) can be cleaned with aqueous
detergents, alcohol, 10% bleach, and acid/base viricide (such as Virkon S) solutions. Rinse with clear water after
using cleaning solutions. Do not autoclave.
Item No. Description Dimensions (L x W x H):
BCS-504 XT Starter, purple Exterior: 16.2 x 12.0 x 5.5 cm / 6.4 x 4.8 x 2.2 in
BCS-513 XT Holder, purple
BCS-511 XT Cooling Core
12 E. Sir Francis Drake Blvd, Suite B, Larkspur CA, 94939 USA info@biocision.com www.biocision.com
XT Starter Instructions, January 2014
©2014. BioCision, LLC. All rights reserved. Patents pending. BioCision, Standardizing Samples designations are trademarks owned by BioCision, LLC.
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