Metrohm VA 757
Objektnummer | B00009424 |
---|---|
ID-number | 009424 |
Object name | Metrohm VA 757 |
Status | Archiv |
Status, terms of delivery and payment
Verification of devices
The second-hand devices are verified by Labexchange Service GmbH before delivery. You are receiving only fully functional devices.
Dispatch time
The stated dispatch times are the shortest possible ones for each article. The effective dispatch times can vary. The effective dispatch times will be stated in the order confirmation.
As a matter of principle, we are offering collective deliveries. The shipping time is calculated based on the position with the longest lead time. A partial delivery is possible on explicit request.
Shipping methods
Parcel services, forwarding agencies, self-pickup, delivery by Labexchange fleet.
Delivery information
Prices exclude shipping costs. Stated shipping costs are to be expected. Deviations are possible. If transport costs are not specified, please ask separately for them.
The stated transport and packing charges apply to the most favorable route if transport and are to be understood as subject to verification due to unexpected cost increases. By reason of unpredictable events, cargo rates and delivery times can change at any time and therefore have to be adapted to the recent situation. Import formalities and possible customs charges will be borne by the purchaser. Incoterm coding according to Incoterms 2010: For persons who collect the devices themselves: EXW, for dipatch by sea: CFR, by air freight: CPT, other shipments: DAP. Note for international shipments: A proof of preference/EUR1 will not be issued by us. When self-collecting/ordering EXW from countries within or outside the European Union, 16% VAT will be retained as a deposit until we have received the corresponding confirmation of arrival/bill of delivery from the buyer.
Terms of payment
We do not accept payment by letter of credit, PayPal, etc. In each case the invoice amount is payable without deduction. Discount is not granted.
Country |
Possible payment methods |
Comment |
DE, AT, CH |
Payment by invoice, payment in advance, paymet by credit card |
Payment by invoice is only possible for corporate clients. |
NL, BE, LU |
Payment by invoice, payment in advance, payment by credit card |
Payment by invoice is only possible for corporate clients |
Other countries |
Payment in advance, payment by credit card |
|
Our General Terms of Sale, Delivery and Payment are valid and are available for download here.
The goods are offered subject to prior sale.
Definition of status
All articles are used articles, except an article is listed especially as a new device.
Status |
Condition |
Comment |
Immediately available |
Used | The article is fully functional and in impeccable condition. It can be shipped immediately. |
In stock |
Used |
The article is on stock. Our service technicians will verify the article before delivery. You are receiving only a fully functional article. |
Published |
Used |
The article is still with the provider. After your order the article will be purchased and verified by us before being shipped to you. A certificate of operativeness as well as a service report are included in delivery. |
New device |
new |
The article is brand new and unused. Regarding new equipment the guarantee/warranty conditions of the corresponding manufacturer apply. |
Labprocure |
Used |
Labprocure GmbH, as the advertiser, is responsible for the content of this device offer. Labprocure assumes liability for the offers advertised here and for the photos and offer texts included. Labprocure GmbH, Bruckstraße 58, 72393 Burladingen. |
Brief characterization
PC-controlled system for voltammetry, set chemical workplace with potentiostat and measuring amplifier.
With multi-mode electrode, rotating disk electrode (RDE) as option.
Tilt-back measuring arm, integrated drip pan.
Current measurement techniques
DC Direct Current
NP Normal Pulse
DP Differential Pulse
SQW Square Wave (10 ... 2000 Hz)
AC1 Phase-sensitive Alternating Current 1 st harmonic (1 ... 250 Hz)
AC2 Phase-sensitive Alternating Current 2 nd harmonic (1 ... 250 Hz)
PSA Potentiometric Stripping Analysis (chronopotentiometry)
CV Cyclic Voltammetry (digital ramp)
Potentiostat
Output voltage (AE) ± 12 V
Output current (AE) ± 35 mA
Sweep voltage range ± 5 V
Voltage resolution 150 µV
Input impedance(RE) R ≥ 1 10 10 Ω
Input Bias Current (RE) ± 10 pA
Noise typ. 200 pA
Circuit for measurement of the noise:
100 nF
AE RE ┤├ WE
Measurement mode: Differential Pulse
(method used: DPNoise.mth)
Sweep rate with voltage step 10 mV
CV: 0 ... 37 V/s SQW, DC: 0 ... 20 V/s
DP, NP: 0 ... 0.5 V/s AC1, AC2: 0 ... 0.02 V/s
Pulse amplitudes AC1, AC2: 1 mV ... 1 V
DP, NP: -1 ... 1 V
SQW: 0.15 mV ... 1 V
Current measurement
Current ranges 100 nA ... 10 mA in 6 ranges
Current resolution 0.5 % of the current range
Minimum current I min 5 pA
Maximum current I max 35 mA
Integration times 0.1 ... 20 ms
Multi-mode electrode MME (working electrode WE)
Designation 6.1246.020
Electrode types DME (dropping mercury electrode)
HMDE (hanging mercury drop electrode)
SMDE (static mercury drop electrode)
Drop surface 0.15 ... 0.60 mm 2 (DME and SMDE)
Glass capillary 6.1226.030 (set of 10)
internal diameter = 0.05 mm
Mercury reservoir 6 mL ≅ 81.2 g; sufficient for ca. 200'000 Hg drops
Auxiliary power inert gas (generally nitrogen N 2 ); p = 1 ± 0.2 bar
Rotating disk electrode RDE (working electrode WE, option)
Construction 6.1246.000 Drive shaft + screw-on
6.1204.XXX Electrode tips
Electrode tips 6.1204.100 Ultra trace graphite
6.1204.110 glassy carbon (GC)
6.1204.120 platinum (Pt)
6.1204.130 silver (Ag)
6.1204.140 gold (Au)
Disk diameter 2.0 +0 / -0.05 mm
Radial eccentricity ≤ 0.2 mm
Regeneration with 6.2802.000 Polishing kit
Rotational speed 200, 400, 600,..., 3000 min -1
Speed constancy ± 2 %
Reference electrode (RE)
Construction double-junction; 6.0728.0X0 Ag/AgCI Ref. system + 6.1245.010 Electrolyte vessel to be filled by user Reference system Ag/AgCI/c(KCI) = 3 mol/L
Diaphragm ceramic diaphragm; diameter = 3 mm
Auxiliary electrode (AE)
Pt auxiliary electrode 6.0343.000 Platinum electrode
GC auxiliary electrode 6.1241.020 Electrode holder +
(option) 6.1247.000 Glassy carbon tip
Stirrer
Construction 6.1246.010 Drive shaft + screw-on
6.1204.090 Stirrer tip
Material PTFE
Rotational speed 200, 400, 600,..., 3000 min -1
Speed constancy ± 2%
Measuring vessels
6.1415.210 standard measuring vessel made of lead-free borosilicate glass 3.3; working volume = 10 ... 90 mL
6.1415.150 measuring vessel made of lead-free borosilicate glass 3.3 (option); working volume = 5 ... 70 mL
6.1418.220 measuring vessel made of lead-free borosilicate glass 3.3 with thermostat jacket (option)
working volume = 12 ... 70 mL
6.1450.210 measuring vessel made of PFA (option)
working volume = 10 ... 90 mL
Dummy Cell
Use Checking the 757 VA Computrace Stand
Determination of the signal/noise ratio
Connections AE auxiliary electrode
RE reference electrode
WE-L working electrode linear mode (RC element)
WE-D working electrode differential mode (peak/wave)
Inert gas (in general nitrogen N 2 )
Use Operation of MME deaeration of sample solution
Required pressure p = 1 ± 0.2 bar (this gas pressure results in a gas flow rate of ca. 20 L/h)
Connection of Dosimats (Remote interface)
Type 665 Dosimat
Number 1...5
Plug D-Sub with 25 pins
Manual operation Dispensing, filling, adjustment of feed and filling rate
PC add-on board
Designation 3.757.1300 PC Add-on Board
Type Internal TCP/IP network adapter for ISA slot
Plug D-Sub with 37 pins
Mains connection
Voltage 100...240 V
Frequency 50...60 Hz
Power consumption 26 W
Fuse 2 x 1.0 ATH (to be replaced by Metrohm Service only using the same type).
Additional electronic overload protection.
Safety specifications
Construction/testing According to IEC 1010 / EN 61010 / UL 3101-1, protection class 1
Safety directions The Instructions for Use include information and warnings which must be heeded by the user to assure safe operation of the instrument.
Electromagnetic compatibility (EMC)
Emitted interference Standards met:
EN 55011 (class B), EN 55022 (class B),
EN 50081 01.92, NAMUR
Immunity to interference Standards met:
EN 50082-1 01.92, EN61000-3,
IEC801-2 ...IEC801-6
Ambient temperature
Nominal operating range 0... +45 °C
Storage, transport -40...+70 °C
Housing
Material of cover Polyurethane rigid foam (PUR) with fire protection for fire class UL94VO, FCH-free
Material of base Steel, enamelled
Material of measuring head arm Steel, enamelled
Dimensions
Width 259 mm
Height 241 mm (417 mm with cover raised)
Depth 526 mm
Weight 7.8 kg (excl. accessories)