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Bead selection, Bead concentration – Luminex 100 IS Developer Workbench Guide Version 2.3 User Manual

Page 9

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MAP

Technology

General Guidelines

PN 89-00002-00-084 Rev. B

3

Handling

Instructions

xMAP Carboxylated Microspheres come in various configurations.
The handling of the product varies with the size of the container and
the fill volume. Avoid excessive agitation of the product to reduce
foaming and surface precipitation. The xMAP microspheres will
settle if left undisturbed. Always ensure that the xMAP microspheres
are homogeneously resuspended prior to dispensing. The uncoupled
xMAP microspheres are not monodispersed and tend to aggregate
until coated. Multiple pipetting from the original container may
affect bead concentrations. Protect the xMAP microspheres from
light at all times.
Store xMAP microspheres at 2 to 8°C. Follow the
resuspension instructions based on the size of container in use:

For 1 mL bottles: Remove from refrigeration and allow
equilibration to room temperature. Place on rotator and gently
rotate for 1-2 minutes or mix by gentle inversion immediately
prior to dispensing.

For 4 mL and 16 mL bottles: Remove from refrigeration and
allow equilibration to room temperature. For new 4 mL and 16
mL bottles, place on a rotator for a minimum of 15 minutes for
complete resuspension. After using approximately 250 µL from
the bottle, you can reduce the rotator time to 1 to 2 minutes. For
these volumes, vortexing and rocking are not recommended.

Bead Selection

Select beads from the standard 100-region bead map. Refer to
Table 1. You should select beads starting from the upper left, reading
across to the end of a row, and then down to the next row:

Bead Concentration

The concentration of beads in an assay determines system speed. To
analyze a 96-well plate in one hour, use at least 5000 beads per target

Note:

Refer to the product

information sheet that
accompanies your xMAP
microspheres for additional
information.

Table 1: 100-Region Bead Selection

033

034

035

036

037

038

042

043

044

045

046

047

051

052

053

054

055

056

061

062

063

064

065

066

072

073

074

075

076

077

017

018

019

020

021

024

025

026

027

028

029

032

041

011

012

013

014

006

007

008

083

084

085

086

087

088

089

090

048

057

058

067

068

069

078

079

080

002

003

004

009

015

022

030

039

049

050

059

060

070

071

081

082

001

005

010

016

023

031

040

091

092

093

094

095

096

097

098

099

100