Thermo Scientific™ White and Black 384-Well Immuno Plates

Catalog No.	Color
12-565-345	White
12-565-346	Black

Catalog No. 12-565-345 Supplier Thermo Scientific™ Supplier No. 460372

Description

Conduct quantitative and qualitative immunoassays with these white and black 384-well immuno plates.

Conduct quantitative and qualitative immunoassays with Thermo Scientific™ White and Black 384-Well Immuno Plates. Ideal for ELISA and binding assays, these plates are compatible with common instruments. They offer lot-to-lot reliability and well-to-well reproducibility for optimal results.

Features:

• Plate has SBS footprint, fits standard equipment and is available with flat-bottom wells
• Thermo Scientific MaxiSorp is hydrophilic and ideal for antibody sandwich assays
• Plate is offered as black or white for optimal choice of application type
• Certified binding offers homogeneity/reproducibility.

White:

• Maximum reflection/minimum autofluorescence and autoluminescence

Black:

• Minimizes crosstalk, back-scattered light and background in fluorescence reading

Compatible with:

Lids for Thermo Scientific MicroWell plates, sealing tape and breathable membrane

Ordering information:

Availability may vary by country

Specifications

• Binding Property: Hydrophilic
• Format: Standard
• Lid: Without Lid
• Detection Method: Chemiluminescence
• Array: 16 x 24
• Packaging: 30 Cases
• Color: White
• Product Type: Microplate
• Material: Polystyrene
• No. of Wells: 384
• Volume (Metric) Working: 100 μL
• Sterility: Non-sterile
• Surface Treatment: MaxiSorp
• Well Shape: Square, Flat Bottom (F-well)
• For Use With (Application): Fluorescence and Luminescence
• No. per Case: 30
• No. per Pack: 10
• Plate Blocking: None
• Target Molecule: Antibodies (Glycoproteins)
• Well Design: F384

Frequently Asked Questions (FAQs)

For Clear Flat-Bottom Immuno Nonsterile 96-Well Plates, is the surface treatment solely on the bottom of the well, or is it also applied to the sides?

For energy treated plates, the entire plate surface receives the energy treatment. The MaxiSorp, PolySorp, MediSorp and MultiSorp plates are energy treated plates. For traditionally treated plates, the well surface is treated up to the listed working volume.

What length of peptide is ideal for binding to the Thermo Scientific MaxiSorp surface? What are the detection limitations?

We have tested and found that a 3 amino acid peptide (Pro, Leu, Gly) cannot be detected when passively adsorbed on the MaxiSorp surface. However, this peptide can be detected when covalently immobilized using CovaLink NH Modules and CovaLink NH2 Modules and Plates. Using covalent immobilization of small peptide residues, you can typically obtain a better orientation of the molecule and reduced problems with antibody recognition of the peptide due to masking of the epitope. We have discovered that a 7 amino acid peptide from the MHC Class II antigen can be detected when adsorbed on the MaxiSorp surface. We state that the detection limitation using the MaxiSorp surface is between 3 and 7 amino acid residues.
One additional note is that detection is contingent upon the orientation of the peptide when immobilized. If the active site is inactivated or hidden at the site facing the solid phase, no detection signal is observed.

Can I bind either single- or double-stranded DNA to the Thermo Scientific MaxiSorp surface?

Single-stranded DNA can be adsorbed to our MaxiSorp surface using approximately 10 µg ssDNA per mL PBS, pH 8.2, although the stability is uncertain. Based on our experience, ssDNA immobilized on the MaxiSorp surface is so loosely bound that it can be removed by stringent washing.
Double-stranded DNA will not bind to the MaxiSorp surface. DNA, however, can be covalently bound to Nunc NucleoLink Strips.

Are your Thermo Scientific 8-Well Strip Caps for Immuno Standard Modules compatible with all Nunc MicroWell 96-Well Microplates and Nunc Immuno 96-Well Plates?

Our Thermo Scientific 8-Well Strip Caps for Immuno Standard Modules were designed to provide a positive seal for flat and round bottom wells of our Nunc MicroWell 96-Well Microplates and Nunc Immuno 96-Well Plates.
8-Well Strip Caps for Immuno Standard Modules are not compatible with C or V bottom wells of the Nunc Microwell 96-Well Microplates and Nunc Immuno 96-Well Plates.

For Nunc Immuno plates and modules, what are the advantages of one well geometry type over another? Which types should I use for various applications?

The following list describes the geometries of wells available for Nunc Immuno-plates and modules:
- Flat bottom (F): Allows maximum transmission of light. These plates can be read on a monochromatic reader.
- Round bottom (U): This geometry optimizes washing and coating. These plates can be read using a dual wavelength reader.
- "C" bottom (C): This design of the well is a combination of both flat and round bottoms. Basically, it is a flat bottomed well with curved edges at the bottom. These plates also can be read using a monochromatic reader combining optimal reading and washing.
- StarWell: These wells have a modified "C" shape geometry with eight fins strategically placed at the bottom. This feature increases surface area, allowing more molecules to become immobilized which reduces incubation times.

What is the difference between certified and non-certified MaxiSorp plates and modules?

Both of these surfaces are identical. The only difference between them is that for the certified plates, a representative sample from each manufacturing lot undergoes a Binding Capacity test. This test is an ELISA-like assay used in our quality control laboratories to ensure binding capabilities.

How can I reduce high background readings and non-specific binding, when performing ELISA using Nunc-Immuno MaxiSorp Plates?

Assay sensitivity depends strongly on efficient removal of non-specific reacting molecules. High background readings and coating instability can be minimized by addition of a blocking step after the first coating. The excess surface is then occupied by indifferent molecules.
We recommend washing three times after each coating step by using a solution of 0.15 M phosphate buffer (pH 7.2) with 0.2 M NaCl and 0.05% Tween 20.
For blocking, we recommend using 0.5% BSA, 1% casein or 1% gelatin in 0.15 M phosphate buffer (pH 8.2) or carbonate buffer (pH 9.6).

What is the maximum binding capacity for proteins on the Thermo Scientific MaxiSorp surface and PolySorp surface?

Molecules bind to our PolySorp and MaxiSorp surfaces through passive adsorption.
Using IgG as a reference molecule and knowing that it is a globular molecule, theoretical calculations indicate that the maximum binding for proteins are:
- For the MaxiSorp surface, in monolayer: 650 ng/cm^2
- For the PolySorp surface: 220 ng/cm^2.

What is the difference between your Thermo Scientific PolySorp, MaxiSorp, and MiniSorp surfaces?

MaxiSorp, PolySorp and MiniSorp surfaces were developed for immunology assays:
- The MaxiSorp surface is a modified, highly charged polystyrene surface with high affinity for molecules with polar or hydrophilic groups. The surface has a high binding capacity for proteins, including globular antibodies in proper orientation. Thus, it offers very high sensitivity in double antibody "sandwich" tests.
- The PolySorp surface is more hydrophobic than the MaxiSorp surface. It has high affinity to molecules of a more hydrophobic character. This surface is particularly suited to non-protein antigens including virus antigens.
- The MiniSorp surface is a polyethylene surface with very low affinity to molecules of any type. This type of surface is ideal for the liquid phase immuno techniques.
- The MiniSorp surface is only available in a tube format, while the MaxiSorp and PolySorp surfaces are offered in both 96-well plate and module formats.

Should I use an opaque black/white immuno plate, or an "optical-bottom" design?

Opaque plates can only be used on “top reader” instruments, which detect (or, in fluorescence mode, excite and detect) from above the plate. Readers that detect from underneath the plate (or imaging systems) use optical-bottom plates, which have a black or white upper well structure and a transparent (polystyrene film or optical coverglass) bottom.

Why would I use a black or white (instead of clear) immuno plate?

Black plates are often used in assays that make use of a fluorescent reporter because the opaque black surface effectively isolates the signal from each well in order to eliminate “crosstalk” or signal bleed. White plates also isolate well-to-well signals somewhat, but also provide a reflective background to direct luminescent output to the reader, and so often serve as a better choice to improve dynamic range from a luminescent reporter.