Detachable grid for manual counting of hematopoietic colonies in SmartDish™ 6-well plates using an inverted microscope

Detachable grid for manual counting of hematopoietic colonies in SmartDish™ 6-well plates using an inverted microscope

1 Grid
Catalog # 27000
27 USD


STEMgrid™-6 is a counting grid designed to attach to the bottom of any SmartDish™ 6-well plate (Catalog #27370). STEMgrid™-6 is also suitable for manual counting of hematopoietic colonies in standard 35 mm dishes, which can be placed individually onto the grid surface.

STEMgrid™-6 contains gridlines to assist in the manual counting of hematopoietic colonies using an inverted microscope. The six 35 mm diameter areas of 2 x 2 mm grids precisely align with each well of a SmartDish™ 6-well plate. In addition, each of the six gridded areas are divided into quadrants by thicker lines, to facilitate counting of only one-quarter or one-half of the culture, and as a reference for locating colonies in different areas of a well during counting.
• Quadrant lines integrated into the grid facilitate counting of partial areas and location of colonies in the culture
• Gridlines are oriented in horizontal and vertical directions and do not need the manual adjustment required when using 60 mm gridded
• Gridlines do not obscure small colonies
• Tab and finger holes allow for easy removal of STEMgrid™-6 from the SmartDish™ plate
• Can be used with 35 mm dishes
• Reusable
Dishes and Plates
Human, Mouse, Rat, Non-Human Primate, Other
Colony Assay

Scientific Resources

Product Documentation

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Product Information Sheet
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Educational Materials (2)

SmartDish™ and STEMgrid™-6 Meniscus-Free Cultureware for More Accurate Counting of Hematopoietic Colonies
Hematopoietic Stem and Progenitor Cells - Products for Your Research

Product Applications

This product is designed for use in the following research area(s) as part of the highlighted workflow stage(s). Explore these workflows to learn more about the other products we offer to support each research area.

Data and Publications


CFU assays performed in standard and SmartDish™ 6-well plates<br>Manual Counting of Hematopoietic CFU Assays

Figure 1. CFU Assays Performed in Standard and SmartDish™ 6-well plates

Shown are representative 35 mm wells from standard (A) and SmartDish™ (B) culture plates, each with STEMgrid-6 attached to facilitate colony counting on an inverted microscope. Optical distortion caused by the meniscus obscures colonies at the edge of cultures grown in standard plates (A) and makes them more difficult to count (see circled colony). Colonies are more easily seen and counted at the edge of the SmartDish™ wells which have been treated to eliminate meniscus formation (B).

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