G. Finkenbeiner Inc. Scientific Glassblowers

781-899-3138 M-F 8:30-4:30 EST Fax 781-647-4044

Scientific Glass Products
"Where the brilliance is in more than quartz itself "

The Founder of our Company, Gerhard Finkenbeiner at work

Quartz Products

Scientific Glassware Products

Thomas Hession , Vice-President
Diane Hession , Office Manager

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Customer Service

G. Finkenbeiner, Inc., fabricators, designers, and distributors of GENERAL ELECTRIC fused quartz products. For over 35 years we have manufactured our products with the finest technical expertise in the field. Close contact with our customers insures an accurate understanding of technical details, and is the basis of our high-efficiency operation and low rejection record. When you order from us you get more for your money--and save yourself from deadline delays and re-order time.

Dependable quality: its what our clients have received for more than three decades.

Our products include:

Any and all types of repairs
Quartz furnace tubes, wafer carriers, and end caps
Manifolds, Adaptors, and Condensors
Plasma chambers
Clear fused quartz tubing and rod from stock
Clear fused quartz plates and disc ground finish or polished
Quartz and Pyrex joints
Quartz Ball O-Ring-Ball and Socket Joints and Flat O-Ring Joints
Dewars silvered and evacuated, with and without windows
Laser tubes and Plasma torches
Consulting services for special designs are available

Our special items include:

Bourbon-Type Pressure Gage for measuring vapor pressures inside a closed vessel at temperatures up to 1000°C.
Vibrating Capacitor Quartz Sensors producing 1 volt signal output. (U.S. Patent #3 198 872)
Bubble Windows that increase optical transmission values.
Etch-Resist a process that increases the strength of finished quartz products, reduces the surface area of items and increases the resistance of quartz to etching. This treatment does not add impurities to products. Available on most items at slightly increased price.
Diffusion Tubes open end, ground joint end or flange end. Up to 8" diameter.

Quartz (Fused Silica) Products Call 781-899-3138 M-F 8:30-4:30 EST FOR PRICING OF ITEMS ON THE FOLLOWING LISTS Other sizes available upon request

QUARTZ TUBING LIST in MILLIMETERS

1.00 x 3.00	2.00 x 3.00	2.00 x 4.00	2.00 x 6.00	3.00 x 5.00	4.00 x 6.00	4.00 x 6.35 (1/4)
4.00 x 8.00	5.00 x 7.00	6.00 x 8.00	6.00 x 10.00	7.00 x 9.00	7.00 x 9.50 (3/8)	8.00 x 12.00
9.00 x 11.00	10.00 x 12.00	10.50 x 13.00	10.5x12.75(1/2)	11.00 x 13.00	12.00 x 14.00	13.00 x 15.00
14.00 x 16.00	15.00 x 17.00	16.00 x 18.00	16.00 x 19.00	16.00 x 20.00	17.00 x 19.00	18.00 x 20.00
20.00 x 22.00	20.00 x 23.00	20.00 x 25.00	22.00 x 25.00	22.00 x 26.00	25.00 x 27.00	25.00 x 28.00
25.00 x 28.80	26.00 x 30.00	28.00 x 31.00	28.00 x 32.00	30.00 x 33.00	32.00 x 35.00	34.00 x 38.00
35.00 x 38.00	36.00 x 40.00	37.00 x 40.00	38.10 x 42.10	40.00 x 43.00	42.00 x 45.00	45.00 x 48.00
46.00 x 50.00	47.00 x 50.00	48.00 x 52.00	50.00 x 54.00	50.00 x 55.00	53.00 x 57.00	55.00 x 59.00
57.00 x 61.00	60.00 x 64.00	60.00 x 65.00	63.00 x 67.00	65.00 x 69.00	66.00 x 70.00	70.00 x 74.00
70.00 x 75.00	75.00 x 80.00	80.00 x 85.00	85.00 x 90.00	90.00 x 95.00	95.00 x 100.00	101.60 x 106.60
105.00 x 110.00	110.00 x 115.00	115.00 x 120.00	120.00 x 125.00	125.00 x 130.00	130.00 x 135.00	130.00 x 136.00
135.00 x 141.00	140.00 x 146.00	145.00 x 151.00	150.00 x 156.00	155.00 x 161.00	160.00 x 166.00	165.00 x 171.00
170.00 x 176.00	176.00 x 184.00	184.00 x 190.00

QUARTZ ROD in MILLIMETERS

1.00	2.00	3.00	4.00	5.00	6.00	7.00	8.00
9.00	10.00	11.00	12.00	13.00	14.00	15.00	19.00

QUARTZ GROUND AND POLISHED SQUARE PLATES - in 1/16, 1/8, 1/4 inch thickness

1/2"	1"	1 1/2"	2	2 1/2"	3
3 1/2"	4	4 1/2"	5	5 1/2"	6

QUARTZ GROUND AND POLISHED DISCS - in 1/16, 1/8, 1/4 inch thickness (Diameter in inches)

1/2"	1"	1 1/2"	2	2 1/2"	3
3 1/2"	4	4 1/2"	5	5 1/2"	6

QUARTZ MICROSCOPE SLIDES

1" X 1" X 1mm THICK

1" X 3" X 1mm THICK

6" x 6" x 1mm THICK

QUARTZ GROUND JOINTS - Available in Male (INNER) and Female (OUTER)

7/25	10/30	12/30	14/35	19/38	24/40	29/42	34/45	40/50
45/50	50/50	55/50	60/50	71/60	86/50	103/60	115/60	135/60

Scientific Glassware Products
Some various glassware that GFI can supply at competitive pricing. We can also manufacture other glassware, distillation apparatus, manifolds, traps and condensers.

ROTARY EVAPORATOR BUMP TRAP - Traps have a 24/40 top outer and the listed size of lower inner joint

Capacity in ml Lower Inner

100 14/20

100 24/40

250 14/20

250 24/40

500 14/20

500 24/40

1000 24/40

SEPERATORY FUNNEL W/ EXTRA STRENGTH WHERE STOPCOCK IS ATTACHED

Capacity ml Stopcock Size Stopper Size

125 2mm 22

250 4mm 22

500 4mm 27

1000 4mm 27

2000 6mm 27

ADAPTERS

24/40 MALE INNER JOINT VACUUM ADAPTER 24/40 MALE INNER JOINT W/ 2MM TEFLON STOPCOCK 24/40 MALE INNER JOINT W/ 2MM GLASS STOPCOCK

SOLVENT DISTILLING HEAD- using 24/40 outer joint on top with reservoir, 24/40 inner and 14/20 inner; using 2mm &4mm Teflon stopcocks

250 ml

500 ml

1000 ml

COLUMNS Various sizes of columns that GFI can supply at competitive pricing. Also, we can manufacture any size column with or without reservoir. CHROMOTAGRAPHY COLUMN, STANDARD - 24/40 outer joint with reservoir, extra strength where Teflon stopcock is attached

I.D.	Body Length	Res. Capacity, ml	Stopcock Size
0.5"	8"	100	2mm
0.5"	10"	100	2mm
0.5"	12"	250	2mm
1.0"	8"	250	2mm
1.0"	12"	250	2mm
1.0"	18"	500	2mm
1.5"	3"	500	2mm
1.5"	12"	500	2mm
1.5"	18"	500	2mm
2.0"	12"	1000	2mm
2.0"	18"	1000	2mm
2.5"	12"	1000	4mm
2.5"	18"	1000	4mm

CHROMOTAGRAPHY COLUMN - Standard 24/40 outer joint with reservoir, extra strength Teflon stopcock and frit

I.D.	Body Length	Res. Capacity, ml	Stopcock Size
0.5"	8"	100	2mm
0.5"	10"	100	2mm
0.5"	12"	250	2mm
1.0"	8"	250	2mm
1.0"	12"	250	2mm
1.0"	18"	500	2mm
1.5"	3"	500	2mm
1.5"	12"	500	2mm
1.5"	18"	500	2mm
2.0"	12"	1000	4mm
2.0"	18"	1000	4mm
2.5"	12"	1000	4mm
2.5"	18"	1000	4mm

We accept Mastercard, Amex and Visa

Capacity in ml	Lower Inner
100	14/20
100	24/40
250	14/20
250	24/40
500	14/20
500	24/40
1000	24/40

Capacity ml	Stopcock Size	Stopper Size
125	2mm	22
250	4mm	22
500	4mm	27
1000	4mm	27
2000	6mm	27