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ONE VINTAGE Magnavox SPEAKER    US $4.99

ONE VINTAGE 15 Inch MAGNAVOX SPEAKER    US $9.99

TWO VINTAGE MAGNAVOX SPEAKERS    US $4.99

ONE VINTAGE 12 inch SPEAKER    US $7.99

LOT of EIGHT 8 vintage SPEAKERS    US $9.99

ONE Silvertone 280 Globe shape VACUUM TUBE    US $12.71

ONE AMPEREX XQ1440 or S4076 VACUUM TUBE    US $4.99

ONE Taylor Ceramic Base T 20 VACUUM TUBE    US $19.99

ONE RCA Coke Shape 5Y3 5Y3G VACUUM TUBE    US $6.50

9 vintage RCA Raytheon Philco 5Y3GT one 5W4GT tubesblack plates used tested    US $31.45

15 vintage RCA Tung Sol Sylvania 6CG7 6FQ7 tubesused tested    US $15.95

Five vintage RCA cleartop 6CG7 6FQ7 tubesused tested    US $15.95

4ea Sylvania Baldwin 12ax7 Radio Vacuum Tubes    US $26.11

Vintage NIB NOS 5591 403B Western Electric Vacuum Tube    US $12.99

Vintage GE 6K6GT Vacuum Ham Amp Radio Tube 60 22 Date Codes Black Plates    US $7.99

Raytheon 6SL7GT Vintage Ham Radio Vacuum Tube    US $5.99

Vintage IEC Mullard 6AW8A Vaccum Tube Amp Radio Ham    US $5.99

Vintage Amperex 6J6 ECC91 England made Bugel Boy Tube Ham Radio    US $11.99

National Union JAN CNU 6SL7GT Black Glass Vintage Tube 247 51 39 date codes    US $19.99

Vintage RCA VT 87 6L7 Vaccum Tube Amp Radio Ham Nice    US $5.99

Rauland Branded RCA 12BH7A Tube Vacuum Radio Vintage 64 52 274 Date Codes    US $9.99

Vintage RCA 5651A Vaccum Tube Amp Radio Ham 66 22 Date Codes    US $4.99

Vintage RCA 5965 Vaccum Tube Amp Radio Ham    US $5.99

BLUE TIPPED ARCTURUS 127 A TUBE D74    US $34.33

4 ARCTURUS 127 ENGRAVED BASE TUBES D73    US $42.50

ARCTURUS 71A GLOBE TUBE BLUE GLASS D72    US $32.99

4 Fisher RCA 7868 Tubes MATCHED QUAD    US $82.51

TWO 12AU7 A ECC82 HAMMOND TUBES USED TESTED    US $14.68

Vintage HYTRON 12AX7 Tall Black Plate Preamp Tube    US $14.50

1 RCA Red Base 5691 6SL7 Tube NEW IN BOX    US $51.99

NOS WIZARD 201A TUBE NIB D63    US $12.00

1 Sylvania 6V6 GTA Tube TESTS STRONG    US $10.99

RCA RADIOTRON UV 201A BRASS BASE TUBE RAINBOW GLASS D62    US $30.89

1 Telefunken ECC82 Tube 12AU7 TESTS STRONG    US $22.30

WESTERN ELECTRIC VT 25 TUBE C31    US $32.99

4 NOS AMPEREX 6DJ8 TUBES NIB TEST GOOD D43    US $43.60

3 RADIOTRON UX 201A TUBES D59    US $32.50

RCA 5692 RED BASE TUBE C34    US $43.20

1 Fisher Telefunken ECC83 Tube 12AX7 TESTS STRONG    US $20.00

4 NOS AMPEREX 6DJ8 TUBES NIB TEST VERY GOOD D42    US $32.00

1 Amperex Bugle Boy ECC82 Tube 12AU7 TESTS STRONG    US $10.50

5U4 GB LOT OF 10 USED RCA TUNG SOL TUBES TESTED 5U4GB    US $18.95

Dynakit Mark II monoblock power amp    US $102.50

ALTEC PEERLESS PHONO MOVING COIL CARTRIDGE MIC STEPUP TRANSFORMER    US $289.99

MTI 120 VOLT AC 1 10 1 HP THRUST 600 LB SCREW JACK ELECTRIC MOTOR TREADMILL    US $59.99

1 ONE HAMMOND TUBE AMPLIFIER AMP1    US $50.00

1 ONE HAMMOND TUBE AMPLIFIER AMP3    US $50.00

1 ONE HAMMOND TUBE AMPLIFIER AMP4    US $50.00

A SET OF THREE 3 VINTAGE 6SN7GT SMOKED GREY VACUUM TUBES TESTED GOOD    US $9.50

RETRO VINTAGE SHURE BROTHERS 51 DYNAMIC MICROPHONE SNYDER STAND 15 CORD F163    US $129.99

TESTED RCA 845 VT 43 HIGH POWER AUDIO AMPLIFIER TRIODE    US $63.60

USED TESTED TAYLOR TUBE 805 VT 143 HIGH POWER AUDIO TRIODE    US $9.99

A SINGLE TUNG SOL 12SK7 METAL BASE VACUUM TUBE TESTED GOOD    US $.99

A LOT OF 5 SYLVANIA 6AL5 NOS NIB VACTUBES    US $9.99

Vintage Philips 7308 E188CC SQ Gold Pin 6922 Holland    US $49.99

Marshall Electronics 6350 Vacuum Tubes New in Box Set of 4    US $25.00

THREE OLD RADIO TUBES TELEFUNKEN VALVO UBL3 ECH4 ABC1 THESE TESTED GOOD GERMANY    US $9.99

5 Raytheon tubes 6T8 6AF3 6JU8 6GJ7 6LM8    US $5.00

5 Raytheon tubes 4EJ7 4DT6 4BQ7 4BZ6 4GK5    US $5.00

Harmon Kardon Vacuum Tube Integrated Amplifier Receiver for rebuild or parts    US $99.00

Bogen M330A Vacuum Tube Public Address PA amplifier excellent guitar amp    US $99.00

Zenith 6JE6C 6LQ6 NOS tests 105 on BK 707 Tester    US $23.00

4 GE 5751 12AX7 ECC83 Black Plate 3 Mica D Getter Amplifier Vacuum Tubes Tested    US $69.99

4 Tung Sol JAN 12AU7 ECC82 Black Glass D Getter Amplifier Vacuum Tubes Tested    US $99.99

1 Pair Tung Sol JTL 5687 Black Plate Horseshoe Amplifier Vacuum Tubes Tested    US $24.99

1 X BRIMAR 6SN7GT 6SN7 EXTREMELY RARE    US $10.50

Two Electro Harmonix 12AT7 EH Vacuum Tubes NEW    US $12.50

5 Tube Valvo EM84 EM 84 magic band Magic eye tubes    US $15.00

FREE SHIPPING 3 THREE VINTAGE USED RADIO TUBES6AX4 6K6 6W4    US $12.39

5 Tube Telefunken EM84 EM 84 magic band Magic eye tube1    US $19.00

12BY7A tubes used two tubes included Tested good    US $2.00

5763 tubes used lot of 6 tested good    US $2.00

12BL6 tubes used matched pair Tested good    US $1.00

LOT OF 19 VACUUM TUBES 6H6 ALL TESTED ALL GOOD    US $15.00

Converter and Power Amplifier Tubes    US $8.99

5 Strong Tung Sol Long Gray Plate FAT D Getter 12AU7 Tubes    US $59.99

TWO 6V6 GT SYLVANIA INTERNATIONAL TUBES NOS TESTED    US $34.26

ONE 6L6 GA NATIONAL TUBE NOS TESTED    US $34.26

ONE 6J5 MG SYLVANIA TUBE NOS TESTED    US $8.81

ONE 47 WESTINGHOUSE TUBE NOS TESTED    US $24.47

TWO 1D5 GP GENERAL ELECTRIC TUBES NOS TESTED    US $14.68

TWO 6BG6 GA SYLVANIA TUBES TUBES NOS TESTED    US $9.79

ONE 71 A WESTINGHOUSE TUBE NOS TESTED    US $26.92

TWO 6SN7 GTB GENERAL ELECTRIC TUBES USED TESTED    US $14.68

TWO 6SN7 GTB SYLVANIA TUBES USED TESTED    US $14.68

6 US Made 12AX7 Tubes Test Strong    US $59.00

4 fully tested 5963 12au7 RCA vacuum tubes    US $9.95

four zenith 12au7 ecc82 vacuum tubes    US $12.95

^ NOS NIB RCA 12V6GT vacuum tube in original boxtested great12V6    US $5.95

^ NOS NIB Pair Sylvania 6P5GT tubesoriginal boxestested greatMatching DC6P5    US $39.95

^ Pr NOS NIB Silvertone 7A6 Loktal loctal vacuum tubesoriginal boxtested great    US $9.95

6SN7WGT Brown Base BLACK PLATE Matched twin triode Audio Tube FREE SHIP US 48    US $19.95

^ NOS NIB Pr Sylvania 25AC5GT tubesoriginal boxtested greatMatching DC25AC5    US $19.95

^ Pr NOS NIB Tung Sol 14F8 Loktal loctal vacuum tubesoriginal boxtested great    US $14.95

6SL7GT Set of Two RCA Ken Rad Tested Good    US $7.00

12AE6A Set of Four Tested Good    US $12.00

12SH7 VT 288 Tubes Set of Five RCA Ken Rad Tested Good    US $12.00

Be Amazing Toys/Steve Spangler Amazing Spheres Science Toy Kit Price: 5.99	Wilton 'Love Potion' Sprinkle Set Price: 6.99
Be Amazing Toys/Steve Spangler Big Bag of Science Kit Price: 35.99	4-piece Halloween Test Tube Sprinkles (4.41 Ounces) Price: 6.3
Reproduction by Design (Hardcover) Price: 43.95	God`s Laboratory (Paperback) Price: 28.47
Genesis Revisited (Hardcover) Price: 15.83	God`s Laboratory (Hardcover) Price: 67.54
Be Amazing Lab-in-a-Bag Test Tube Wonders Chemistry Kit Price: 21.99	Be Amazing Toys/Steve Spangler Test Tube Adventures Lab in a Bag Science Kit Price: 21.99
Reproductive Technologies As Global Form (Paperback) Price: 50.85	Be Amazing Toys/Steve Spangler Ice Fishing Science Kit Price: 5.39
Lab-in-a-bag Test Tube Discoveries Toy Set Price: 23.49

What is the process where scientists use a machine to help spin/mix material held in test tubes?

and what is the name of this machine....it is a machine where you place all these test tubes on it and when u turn it on it begins to spin around .. thus mixxing the material inside the tubes.

Centrifugation , spins at a certain rpm, and seperates the items by density. This is done by a centrifuge, which simply holds the test tubes and spins them rapidly and seperates everything in the tube.

A vortex, is a mixer that vibrates and spins the test tube while you hold it. The process would just be called "vortexing".

BoB - The Kids (feat. Janelle Monáe) (Musikal Tube) | Lyrics