Formvar on 3mm H7 Finder Cu Grids (Pack of 25)

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Product Details:

Melting Point Quick softening above 150°C (amorphous transition)
Poisonous Yes
Shape Circular grid with H7 Mesh Finder pattern
Molecular Weight Variable (polymer)
Smell Odorless
Refractive Rate 1.49 (Formvar film)
Solubility Insoluble in water, soluble in most organic solvents such as chloroform and toluene
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Formvar on 3mm H7 Finder Cu Grids (Pack of 25) Product Specifications

Smell Odorless
Molecular Weight Variable (polymer)
Solubility Insoluble in water, soluble in most organic solvents such as chloroform and toluene
Refractive Rate 1.49 (Formvar film)
Melting Point Quick softening above 150°C (amorphous transition)
Poisonous Yes
Shape Circular grid with H7 Mesh Finder pattern
HS Code 74199930
Density 1.25 Gram per cubic centimeter(g/cm3)
CAS No 9002-89-5 (Polyvinyl alcohol, parent polymer)
Chemical Name Polyvinyl formal (Formvar)
Usage Used as support films for transmission electron microscopy
Main Material Copper (Cu) grid, coated with Formvar film
Grade Laboratory/Research Grade
Purity Ultra-pure Formvar film
Other Names Formvar-coated copper finder grid
Structural Formula [-CH2CHOH-]n (base structure of polyvinyl alcohol, formal-modified)
Type H7 Finder grid, 3mm diameter
Application Supports for TEM specimen preparation, electron microscopy
Standard Complies with EM microscopy consumable standards
Form Solid grid with polymer film
Storage Store in a cool, dry place, protected from dust and static
Classification Microscopy sample support grid
EINECS No Not applicable (Formvar is a trade name for polyvinyl formal)
Ph Level Neutral (pH 7 in water)
Molecular Formula (C2H4O)n, polyvinyl formal

Lot Number Provided with each pack for traceability
Film Type Formvar continuous film
Grid Pattern H7 Finder (reference pattern for TEM localization)
Fragility Support film is fragile; handle with care
Surface Finish Smooth, low background
Film Adherence Optimized for high specimen stability
Disposability Dispose as laboratory plastic/copper waste according to local regulations
Film Thickness Typically 20-25 nm (on request, can be different)
No. of Grids per Pack 25
RoHS Compliance Yes
Grid Size 3mm diameter
Grid Material High purity copper
Packaging Anti-static container/box to prevent contamination
Conductivity Copper base provides high conductivity
Compatibility Suitable with most TEM analysis
Shelf Life 12-24 months under recommended storage

Formvar on 3mm H7 Finder Cu Grids (Pack of 25) Trade Information

Main Export Market(s) Asia, Australia, North America, South America, Eastern Europe, Western Europe, Middle East, Central America, Africa
Main Domestic Market All India

Product Description

Formvar coated grids without a carbon layer are suitable for TEM applications up to 100kV. The films are available on copper grids. Nickel and gold grids are also available.

Supplied as 25 grids in a grid box.

Robust Support for TEM Specimen Preparation

With Formvar-coated copper grids, users benefit from a combination of mechanical stability, high conductivity, and low background interference during electron microscopy analysis. The continuous film is optimized to hold delicate specimens securely, making these grids ideal for preparing ultra-thin sections and locating samples with precision through the H7 Finder pattern.

Consistent Quality and Reliable Traceability

Each pack contains 25 grids, clearly traceable with lot numbers for quality assurance. Manufactured from ultra-pure copper and Formvar, the grids are compliant with RoHS and EM microscopy standards. The packaging protects against static and contamination, ensuring the grids arrive in pristine condition and remain reliable throughout their shelf life.

Optimized Handling and Storage Conditions

Formvar on Cu grids is sensitive to environmental factors. To maximize service life, store them in a cool, dry place, protected from dust and static discharge. The anti-static box minimizes contamination risk, preserving grid integrity for up to 1224 months under recommended conditions.

FAQs of Formvar on 3mm H7 Finder Cu Grids (Pack of 25):

Q: How should I handle and store Formvar on 3mm H7 Finder Cu Grids to maintain their quality?

A: Handle grids with clean, anti-static tweezers to avoid direct contact and potential film damage. Store them in their original anti-static container in a cool, dry environment, away from dust and static electricity, to preserve film integrity and prolong shelf life up to 1224 months.

Q: What is the main application of these Formvar-coated copper grids?

A: These grids are primarily used as sample supports for transmission electron microscopy (TEM), providing a stable, low-background platform, facilitating specimen localization through the H7 Finder pattern during imaging and analysis in laboratory or research settings.

Q: When is it suitable to request a different Formvar film thickness?

A: You can request a different film thickness if your experimental requirements call for specific mechanical properties, specimen visibility, or electron transparency. Custom thicknesses may improve sample stability or imaging quality for particular TEM applications.

Q: What benefits does the H7 Finder grid pattern offer for TEM analysis?

A: The H7 Finder pattern serves as a reference landmark for reliable specimen localization, enabling precise re-positioning and tracking of samples during TEM observations, improving workflow accuracy and efficiency in multi-stage experiments.

Q: Where should I dispose of used grids after laboratory use?

A: Dispose of Formvar-coated copper grids as laboratory plastic or copper waste according to local regulations. Detailed guidance is often available in your institutions waste disposal policy, ensuring proper environmental compliance.

Q: Is the Formvar film compatible with most organic solvents and non-toxic for general laboratory use?

A: Yes, Formvar is insoluble in water and soluble in many organic solvents, such as chloroform and toluene. It is non-toxic under standard laboratory conditions, making it safe for routine TEM sample preparation.

Q: What is the process for verifying grid quality and lot traceability?

A: Each grid pack carries a lot number for traceability. This identifier enables you to confirm quality, origin, and compliance, supporting consistent results and facilitating troubleshooting or repeat purchasing in regulated laboratory environments.

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