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Browse a comprehensive range of professional test and measurement equipment at TT Instruments, your trusted source for high-quality fibre optic, telecommunications, RF, and electronic testing solutions. Our full collection includes everything from OTDRs, optical spectrum analysers, and fusion splicers to power meters, inspection scopes, and optical loss test sets, all sourced from leading manufacturers such as Viavi Solutions, EXFO, Fluke Networks, Fujikura, and Keysight Technologies. At TT Instruments, we specialise in supplying professionally tested, cost-effective used equipment that supports installation, maintenance, and troubleshooting across fibre optic and electronic networks, helping engineers and businesses achieve accurate, reliable results with equipment they can trust.

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We buy used, surplus and pre-owned test and laboratory equipment.

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Thermo Electron LED GmbH Power Supply Unit 50100544 sealed in clear plastic bag with UK mains cable

Thermo Electron LED GmbH Power Supply Unit 50100544 rear label showing 230VAC input 24VAC 3A 40VA output CE mark

Thermo Electron LED GmbH Power Supply Unit 24VAC / 3.0A / 40VA 50100544

Model: 50100544

Manufacturer: Thermo Electron LED GmbH

In stock: 1

SKU: 7493 4D03

Condition: New other (see details)

Price: Sale price £127.50

Save £2,000.00

BD Becton Dickinson FACSMelody Cytometer Cell Sorter System 661768 3 Lasers

BD Becton Dickinson FACSMelody Cytometer Cell Sorter System 661768 3 Lasers

BD Becton Dickinson FACSMelody Cytometer Cell Sorter System 661768 3 Lasers

Model: 661768, 152510101, 657984

Manufacturer: Becton Dickinson

In stock: 1

SKU: 7442 1A01

Condition: Used

Price: Sale price £15,995.00 Regular price £17,995.00

ChemoMetec NucleoCounter NC-200 automated cell counter with Dell laptop running licensed NucleoView software

ChemoMetec NucleoCounter NC-200 front view showing Chemometec branding, yellow cassette arm and RUN button

Chemometec A/S NucleoCounter NC-200 P/N: 900-0201 With PC and Licensed Software

Model: NC-200

Manufacturer: Chemometec

In stock: 1

SKU: 7440 5C03

Condition: Used

Price: Sale price £2,545.75

EXFO PSB-B-2200-88-88 launch test cable open Pelican case showing yellow SC/APC fibre coil on spool

EXFO PSB-B-2200-88-88 closed Pelican carry case front view with EXFO branding and TTInstruments product label

EXFO Launch Test Cable PSB-B-2200-88-88 2200M SM APC

Model: PSB-B-2200-88-88

Manufacturer: EXFO

In stock: 2

SKU: 7472 3C03

Condition: Used

Price: Sale price £106.25

EXFO FOT-930 MaxTester II pair with two carry cases, chargers, talk set headset, RS-232 cable, probe, and user guides

Two EXFO FOT-930 MaxTester II units front view showing LCD screen, F1 F2 function keys and navigation keypad

EXFO FOT-930 MaxTester II Multifunction Loss Tester SET 1310/1550/1625 SM OLTS

Model: FOT-932-4

Manufacturer: EXFO

In stock: 1

SKU: 7471 3C02

Condition: Used

Price: Sale price £2,205.75

VIA Freeze Quad PR-CF-002 manufacturer specification sheet showing capacity, dimensions, power and software details

GE Asymptote Cytiva PR-CF-002 VIA Freeze QUAD Controlled Rate Freezer

Model: VIA Freeze QUAD

Manufacturer: GE Asymptote

In stock: 1

SKU: 7459 1A04

Condition: Used

Price: Sale price £6,795.75

Leica DMi1 inverted microscope with Flexacam C1 camera mounted, binocular head, and S40 stage — 3/4 front-left view

Leica DMi1 inverted microscope front view showing Flexacam C1 camera, binocular eyepieces, S40 condenser, and stage

Leica DMi1 Inverted Microscope w/ 4x 10x Objectives

Model: DMi1

Manufacturer: Leica

In stock: 2

SKU: 7461 1C01

Condition: Refurbished

Price: Sale price £1,062.50

AFL NOYES FOCIS DFS1 DFD1 fiber inspection system complete kit with hard case, probe, tablet, 7 tips, charger, and manuals

AFL NOYES DFD1 touchscreen tablet in blue rubber protective boot with integrated wire kickstand, screen off, front view

AFL NOYES DFS1 + DFD1 FOCIS Fiber Inspection System with 7 Tips

Model: FOCIS

Manufacturer: AFL NOYES

In stock: 1

SKU: 7465 7C01

Condition: Used

Price: Sale price £760.75

Leica HI PLAN I 20x/0.30 PH1 objective 506272 front view showing green band and M25 brass thread

Leica HI PLAN I 20x/0.30 PH1 objective part number 506272 label side view with green identification ring

Leica HI PLAN I 20X/0.30 PH1 Objective

Model: 20X/0.30

Manufacturer: Leica

In stock: 1

SKU: 7463 CB01

Condition: Used

Price: Sale price £127.50

Leica HI PLAN I 40x/0.50 PH1 objective front view showing blue band, brass thread mount and engraved markings

Leica HI PLAN I 40x/0.50 PH1 objective reverse side showing serial number 506369 and full specification markings

Leica HI PLAN I 40X/0.50 PH1 Objective

Model: 40X/0.50

Manufacturer: Leica

In stock: 1

SKU: 7462 CB01

Condition: Used

Price: Sale price £106.25

Gibco CTS Rotea Counterflow Centrifuge A44768 front view with Dell laptop running Rotea software and dual IV bag poles

Gibco CTS Rotea Centrifuge A44768 right side view showing IV pole, tubing door open, serial label and PAT test pass sticker

Gibco by Thermo Scientific A44768 CTS Rotea Counterflow Centrifuge MFD 2020

Model: A44768

Manufacturer: gibco by Thermo Scientific

In stock: 1

SKU: 7460 1B02

Condition: Used

Price: Sale price £10,195.75

Miltenyi Biotec CliniMACS Plus 44085 cell separation system full front view with bag hangers, magnet unit and LCD panel

CliniMACS Plus 44085 top-down view showing LCD control panel, peristaltic pump, magnet unit and numbered valve connectors 6–11

Miltenyi Biotec CliniMACS 44085 Cell Separation System 15101

Model: CliniMACS

Manufacturer: Miltenyi Biotec

In stock: 1

SKU: 7457 1E04

Condition: Used

Price: Sale price £2,970.75

Miltenyi Biotec CliniMACS Plus 75101 cell separation system full front view showing instrument, magnet, pump and IV poles

CliniMACS Plus 151-01 top-down view of base unit showing peristaltic pump, pinch valves 6–11 and LCD control panel

Miltenyi Biotec CliniMACS Plus 75101 Cell Separation System 151-01 MFD 2020

Model: CliniMACS Plus

Manufacturer: Miltenyi Biotec

In stock: 1

SKU: 7456 1E04

Condition: Used

Price: Sale price £4,245.75

Save £2,400.00

Thermo Fisher Ion GeneStudio S5 Prime semiconductor sequencer front view with touchscreen displaying FPGA initialisation

Ion GeneStudio S5 Prime sequencer system performance comparison chart highlighting S5 Prime 50 Gb throughput specs

Thermo Fisher IonTorrent Ion GeneStudio S5 Prime Semiconductor Sequencer 2018

Model: 7739

Manufacturer: Thermo Fisher Scientific

In stock: 1

SKU: 7439 1B02

Condition: Used

Price: Sale price £13,595.00 Regular price £15,995.00

Viavi C5TEM-R Rubidium Oscillator TEM front view with GNSS antenna, SMA cable and RF jumper accessories laid out

Viavi C5TEM-R TEM front label showing model C5TEM-R, S/N WMRX0080900007, CE marking and TTInstruments Product ID 3917

Viavi C5TEMR Rubidium Oscillator Timing Expansion Module TEM

Model: C5TEM-R

Manufacturer: Viavi JDSU

In stock: 1

SKU: 3917 4E03

Condition: Used

Price: Sale price £1,270.75

Marposs E9066T complete industrial gauging system with GagePod modules, pencil probes, pneumatic gauges, cables and accessories

Marposs E9066T 15" industrial gauging computer front view showing touchscreen display and bench stand

Marposs E9066T B8667J01143 15" Industrial Gauging System w/ Gaugepod Interface

Model: B8667J01143 B7515002600 B7515000200

Manufacturer: Marposs

In stock: 1

SKU: 7097 8A04

Condition: New other (see details)

Price: Sale price £2,970.75

Viavi G700050370 horn antenna kit with G700050340 omni antenna, PE9850/2F-20 horn, RF cable and SMA adapters

Viavi G700050370 antenna kit components displayed in open foam-lined hard carry case with lid open

Viavi G700050370 K-f RF Directional Horn Antenna Kit 26.5 - 40 GHz + G700050340

Model: G700050370 Viavi G700050340

Manufacturer: Viavi JDSU

In stock: 1

SKU: 7166 SF01

Condition: Used

Price: Sale price £1,695.75

Viavi G700050370 RF horn antenna kit hard carry case closed, showing VIAVI branding and part number label

Viavi G700050370 horn antenna kit open carry case showing antenna, tripod handle, 40 GHz cable and adapters in foam

Viavi G700050370 K-f RF Directional Horn Antenna Kit 26.5 - 40 GHz

Model: G700050370

Manufacturer: Viavi JDSU

In stock: 1

SKU: 7168 4D04

Condition: Used

Price: Sale price £1,695.75

VIAVI Trilithic DSP TDR field meter in soft carry case with shoulder strap, power adapter alongside, boot-up splash screen visible

VIAVI DSP TDR options screen showing DSP TDR active, Bluetooth Adapter not present, Unit ID 1000620919

Viavi Trilithic DSP TDR Field Meter

Model: DSP TDR

Manufacturer: Viavi JDSU

In stock: 2

SKU: 7038 4C03

Condition: Used

Price: Sale price £250.75

Keysight N5444A InfiniiMax III differential probe head kit in open cardboard box with pink anti-static foam

Keysight N5444A probe head, grey Belden voltage input cable and gold SMA shorting cap laid out on white surface

Keysight N5444A InfiniiMax III 2.92mm Differential Probe Head w/ Accessories

Model: N5444A

Manufacturer: Keysight

In stock: 5

SKU: 3935 4D02

Condition: Used

Price: Sale price £637.50

IMI Norgren Excelon 72 Series air preparation assembly mounted on black steel panel, front view showing shut-off valve, filter/regulator with gauge, and coalescing filter

Close-up of two IMI Norgren Excelon 72 Series polycarbonate filter bowls showing transparent bodies and manual drain ports, TTinstruments

IMI Norgren Air Preparation Assembly 72 Series 8-10mm Tube 1/4" Bore

Model: T72T-3GA-P1N / B72G-2GK-QT3-RMN / F72C-2GD-QT0

Manufacturer: Norgren

In stock: 3

SKU: 7064 6G04

Condition: New other (see details)

Price: Sale price £165.75

Marposs H1G1 Type 1 pneumatic plug gauge Ø60mm overhead view with blue air tube coiled alongside

Marposs H1G1 Type 1 pneumatic bore gauge rear view showing blank ID plate, stainless head and air tube connector

Marposs H1G1 Type 1 Pneumatic Gauge For Internal Diameters Dia=60mm Depth=27mm**

Model: H1G1

Manufacturer: Marposs

In stock: 2

SKU: 7091 5E03

Condition: New other (see details)

Price: Sale price £127.50

Marposs F05 B3PR01L0000 4x pencil probe assembly with H2G2 Short 12-14 handle and 3x multi-pin cables, front view

Close-up of Marposs F05 pencil probe barrel showing model B3PR01L0000, serial B23DQ5367 and F05 designation

Marposs F05 4x Pencil Probe B3PR01L0000 w/ H2G2 Shortb 12-14 Handle + Enclosure.

Model: B3PR01L0000

Manufacturer: Marposs

In stock: 2

SKU: 7092 5E03

Condition: New other (see details)

Price: Sale price £127.50

Viavi OLTS-85 2325/14 MM matched pair with carry bag, power adapter and plug adapters — full kit view

Viavi JDSU OLTS-85 Fiber Optic Loss Test Set 2325/14 MM Multi-mode Tier 1

Model: OLTS-85

Manufacturer: Viavi JDSU

In stock: 1

SKU: 7125 4D03

Condition: Used

Price: Sale price £1,270.75

Marposs F05 B3PR01L0000 quad probe assembly with H1G2 Short 12-14 handle, aluminium housing and 4x cable connectors

Close-up of Marposs F05 pencil probe B3PR01L0000 body showing serial number B23DQ5367 and F05 designation label

Marposs F05 4x Pencil Probe B3PR01L0000 w/ H1G2 Shortb 12-14 Handle + Enclosure

Model: B3PR01L0000

Manufacturer: Marposs

In stock: 1

SKU: 7093 6G02

Condition: New other (see details)

Price: Sale price £165.75

Leica GKL23 dual fast charger front view showing coloured LED indicator panel and two 5-pin output cables

Leica GKL23 fast charger rear view showing ribbed heatsink housing and UK mains power cable with warning label

Leica GKL23 Fast Charger 18V 1.8A 5-Pole Plug For Leica TPS Total Station

Model: GKL23

Manufacturer: Leica

In stock: 7

SKU: 7129 4A04

Condition: Used

Price: Sale price £42.50

VIAVI G700050602 Band Pass Filter 776MHz to 788MHz front label view with N-type connectors and barcode

VIAVI G700050602 Band Pass Filter 776MHz to 788MHz

Model: G700050602

Manufacturer: Viavi JDSU

In stock: 2

SKU: 7105 6C04

Condition: New other (see details)

Price: Sale price £136.00

VIAVI E98OSXXOSX cascade connection kit in original packaging showing full cable and both metal locking connectors

VIAVI E98OSXXOSX close-up of blue-marked male connector end showing 5-pin gold contacts and knurled metal coupling nut

VIAVI E98OSXXOSX CONNECTION KIT TO CASCADE OSX800

Model: E98OSXXOSX

Manufacturer: Viavi JDSU

In stock: 4

SKU: 7108 6C04

Condition: New other (see details)

Price: Sale price £212.50

VIAVI G700050603 Band Pass Filter 806MHz–849MHz front label view, N-type connectors, serial 62401161500020

VIAVI G700050603 Band Pass Filter 806MHz–849MHz in original manufacturer's box, showing IN/OUT label

VIAVI G700050603 Band Pass Filter 806MHz to 849MHz

Model: G700050603

Manufacturer: Viavi

In stock: 1

SKU: 7106 6C04

Condition: New other (see details)

Price: Sale price £136.00

VIAVI E980TUXOSX connection cable kit in original packaging, full cable view showing both connectors

VIAVI E980TUXOSX close-up of knurled locking 5-pin circular connector with blue collar detail

VIAVI E980TUXOSX KIT TO CONNECT OSX8000 TO OTU8000

Model: E980TUXOSX

Manufacturer: Viavi JDSU

In stock: 4

SKU: 7107/7992 6C04/6F05

Condition: New other (see details)

Price: Sale price £212.50

VIAVI G700050605 Band Pass Filter 1850MHz to 1910MHz front label view with original box

VIAVI G700050605 Band Pass Filter 1850–1910MHz showing N-type connectors, serial number label and box

VIAVI G700050605 Band Pass Filter 1850MHz to 1910MHz

Model: G700050605

Manufacturer: Viavi

In stock: 1

SKU: 7103 6C04

Condition: New other (see details)

Price: Sale price £136.00

VIAVI G700050604 Band Pass Filter 1710–1755MHz with N-type connectors in front of original product box

VIAVI G700050604 Band Pass Filter 1710–1755MHz 50 ohm front label showing serial number and original box

VIAVI G700050604 Band Pass Filter 1710MHz to 1755MHz 50 ohm

Model: G700050604

Manufacturer: Viavi

In stock: 1

SKU: 7104 6C04

Condition: New other (see details)

Price: Sale price £136.00

VIAVI JDSU Xgig 1000 PCIe Gen3 X8 Protocol Analyser chassis front panel — Port A, Port B CXP connectors, lane LEDs, cascade and trigger ports

VIAVI Xgig 1000 PCIe Gen3 full accessory bundle — AI CEM card, M.2 Pod, SFF-8639, CXP cables, power adapters, harnesses and mounting rails

VIAVI XGIG1K PCIe3 X8 Protocol Analyser + M.2 POD + PCIE3 X8 AI CEM + SFF-8639

Model: XGIG1K-PCIE3-X8

Manufacturer: VIAVI

In stock: 1

SKU: 4082 3A04

Condition: Used

Price: Sale price £11,995.00

KaVo EXPERTsurg LUX surgical unit front view, colour LCD showing 1000 rpm and 5.00 Ncm, with S600 LED motor

KaVo EXPERTsurg LUX 1.008.3500 front panel close-up showing LCD screen off, navigation buttons and motor socket

Kavo EXPERTsurg LUX Surgical Unit 1.008.3500 MFG 2017 w/ S600 LED Micro Motor

Model: EXPERTsurg

Manufacturer: Kavo

In stock: 1

SKU: 7054 6E02

Condition: Used

Price: Sale price £1,270.75

ioLight Compact Cell Imager inverted microscope front-right angle showing purple focus knob and iolight branding

ioLight Compact Cell Imager inverted microscope left-side view showing arm, sample stage and purple focus knob

iolight Compact Cell Imager 1mm FoV Inverted Microscope 10x Objective

Model: Model 1

Manufacturer: iolight

In stock: 1

SKU: 7051 4E03

Condition: Used

Price: Sale price £1,185.75

Viavi JDSU Xgig1000 Xgig1K-PCIe3-X8 PCIe Gen3 analyser front panel — Port A, Port B CXP connectors, lane LEDs, rate indicators, cascade, trigger and clock ports

Viavi Xgig1000 PCIe Gen3 web utility — Address Configuration screen showing computer name XGIG1K21628480 and DHCP enabled

Viavi JDSU Xgig1K-PCIE3-X8 Xgig 1000 PCIe Gen 3 Test Platform Analyzer Jammer

Model: Xgig1K-PCIE3-X8

Manufacturer: Viavi JDSU

In stock: 1

SKU: 4084 2B02

Condition: Used

Price: Sale price £11,995.00

JDSU XGIG1K-PCIE3-X8-AI PCIe Gen3 CEM Interposer card with two CXP cables and external power supply

Viavi JDSU XGIG1K-PCIE3-X8-AI interposer card front bracket view showing USB and power connector ports

VIAVI JDSU XGIG1K-PCIE3-X8-AI 8-lane Gen3 PCIe CEM Interposer card

Model: XGIG1K-PCIE3-X8-AI

Manufacturer: VIAVI

Network Testers

In stock: 1

SKU: 4077 3C02

Condition: Used

Price: Sale price £420.75

Tektronix 016-1985-03 Rack Mount Kit complete contents laid out — mounting frame, slide rails, cables, hardware, and instruction manual

Tektronix 016-1985-03 rack kit components — PS/2 adapter cables, grey spacer rails, L-bracket, adapter plate, and hardware bag

Tektronix Rack Mount Kit 016-1985-03

Model: 016-1985-03

Manufacturer: Tektronix

In stock: 1

SKU: 7043 1B01

Condition: Used

Price: Sale price £80.75

Keysight Agilent J7211A Attenuation Control Unit front view with USB cable included, Port 1 and Port 2 SMA connectors visible

Agilent J7211A Attenuation Control Unit angled front-left view showing LCD display, numeric keypad, rotary dial and ventilation slots

Keysight Agilent J7211A Attenuation Control Unit DC to 6 GHz 121 dB 1 dB Step

Model: J7211A

Manufacturer: Agilent

In stock: 6

SKU: 7045 2B03

Condition: Used

Price: Sale price £1,015.75

Viavi MPOLx MM Tier 1 OLTS complete kit — MPOLP-85P, MPOLS-84P, 2x P5000i scopes, carry bag, accessories

Viavi MPOLP-85P and MPOLS-84P front panel view showing touchscreens, keypads and VIAVI calibration labels

Calibrated Viavi MPO Optical Loss Test Set MM Tier 1 Certification LS PM + Scope

Model: MPOLP-85P MPOLS-84P P5000i

Manufacturer: Viavi JDSU

In stock: 1

SKU: 4017 4B03

Condition: Refurbished

Price: Sale price £4,075.75

JDSU OLT-55 Optical Loss Test Set front view, LCD showing Laser Source OFF at 1550nm -3.00dBm

JDSU OLT-55 top panel close-up showing fibre optical ports and laser warning label, screen marks visible

Viavi JDSU OLT-55 Optical Loss Test Set 1310/1550 nm 2286/01 -70 to +20 dBm

Model: OLT-55

Manufacturer: Viavi JDSU

In stock: 1

SKU: 7024 7D03

Condition: Used

Price: Sale price £148.75

Fluke 729 FC FLK-729 30G FC automatic pressure calibrator with full accessory set, box and calibration cert

Fluke 729 FC automatic pressure calibrator in Fluke branded black soft carry pouch with pressure port visible

Fluke 729 FLK-729 30G FC 30 PSI Automatic Pressure Calibrator 729FC-30PSI

Model: FLK-729 30G FC

Manufacturer: Fluke

In stock: 1

SKU: 3886 7C01

Condition: New other (see details)

Price: Sale price £3,395.75

Agilent N4011A MIMO Multi-port Adapter front panel with accessories: control cable, SMA adapter, torque wrench

Agilent N4011A MIMO Multi-port Adapter angled view showing ventilated top cover and front panel SMA ports

Keysight N4011A MIMO/MULTI-PORT ADAPTER

Model: N4011A

Manufacturer: Keysight Agilent

In stock: 1

SKU: 4057 4D01

Condition: Used

Price: Sale price £191.25

Keysight N4952A 32 Gb/s Error Detector front panel showing Aux In, Data, Data-bar, Aux Out SMA ports and calibration label S/N MY54455014

Keysight N4952A Error Detector full accessory set — unit, original box, software CD, connector care guide, safety sheet

Keysight N4952A Error Detector Remote Head 32GB/s Option E32

Model: N4952A

Manufacturer: Keysight Agilent

In stock: 1

SKU: 4056 4D01

Condition: Used

Price: Sale price £1,270.75

Sold out

EXFO FIPT-400-U25MA 2.5mm APC fiber scope adapter tip, stainless steel body, front view

EXFO FIPT-400-U25MA adapter in sealed bag showing barcode label with part number 1069007

EXFO Fiber Scope Adapter U25MA for 2.5mm Ferrules APC FIPT-400-U25MA

Model: FIPT-400-U25MA

Manufacturer: EXFO

In stock: 0

SKU: 7001 6C02

Condition: Used

Price: Sale price £51.00

EXFO FIPT-400-SC-APC SC/APC bulkhead adapter tip, stainless steel, front view showing threaded base and barrel

EXFO FIPT-400-SC-APC adapter in sealed polybag with barcode label showing part number 1075437

EXFO Fiber Scope Adapter SC-APC Bulkhead FIPT-400-SC-APC

Model: FIPT-400-SC-APC

Manufacturer: EXFO

In stock: 1

SKU: 7002 6C02

Condition: Used

Price: Sale price £42.50

Keysight 87104D SP4T coaxial switch front view with Keysight label, 16-pin connector top, and 5 black port caps alongside

Keysight 87104D side view showing three 2.92 mm ports and ISO 17025 Z540.1 calibration label S/N MY55400952

Calibrated Keysight 87104D DC-40 GHz SP4T Coaxial Switch

Model: 87104D

Manufacturer: Agilent

In stock: 2

SKU: 3947 7E02

Condition: Refurbished

Price: Sale price £191.25

Fairview FMC0222085-36 SMA to SMP 36-inch blue coax cable assembly with identification label and black SMP dust cap

Fairview FMC0222085-36 SMA male connector end close-up showing gold pin, stainless steel body and threaded coupling nut

Fairview FMC0222085-36 Cable Asembly SMA to SMP 50 Ohms 18 GHz 36''

Model: FMC0222085-36

Manufacturer: Fairview

In stock: 4

SKU: 3906 6D05

Condition: Used

Price: Sale price £29.75

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