LabScientific, Inc.

Wednesday, October 15, 2008

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Replica Blocks

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			Replica Blocks
			Velveteen Squares
			X-alpha-gal (X-a-gal)

Replica Blocks

Replica Blocks are constructed from engineered thermoplastic. Exclusive design of block and collar holds velveteen securely in place. Wide Diameter block facilitates colony transfer around the edges. Solid block and collar are extremely durable for years of use.

Catalog #	For petri dish size	Diameter x height	Use with velveteen squares	Price
LS 400	100-mm round	3.25"x2.75"	6-inch	$150.00	add to cart
LS 404	150-mm round	5.25"x2.5"	8-inch	$225.00	add to cart

Velveteen Squares

Highest quality velveteen optimizes efficiency of colony transfer.
All edges are overlocked stitched to increase product life.
Velveteen squares are constructed from reusable 100% cotton.
Each can create up to twenty replicas from a single master plate.
Black material enables colonies to be easily seen between replicas.

Catalog #	Width	Quantity	Comments	Price
LS 401	6-inch	25/pkg	Sewn Edges	$50.00	add to cart
LS 403	8-inch	10/pkg	Sewn Edges	$40.00	add to cart

X-alpha-gal (X-a-gal)

Properties and Applications:
X-a-gal (5-Bromo-4-Chloro-3-indolyl-a-D-galactopyranoside) is a chromogenic substance used to demonstrating a-galactosidase activity. Thus yeast S. cerevisiae which are positive for this enzyme produce blue colonies when grown in the presence of X-a-gal. Used in yeast two-hybrid screens.
X-a-gal should be dissolved in DMF at a concentration of 2mg/ml for premade plates or 20mg/ml for indicator plates.

Analytical Specifications:
Recommended storage condition: frozen at -20° C for 6 month
Molecular weight: 408.6
Melting point: 232-234° C

Catalog #	Product	Size	Quantity	Price
X-466	X-a-gal	250mg	1	$150.00	add to cart
X-566	X-a-gal	1g	1	$450.00	add to cart


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