Waters 474
Objektnummer | B00014811 |
---|---|
ID-number | 014811 |
Object name | Waters 474 |
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.
For deliveries to countries outside the EU, an additional fee of 70,00€ for export is charged. 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 credit card, 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 |
Payment by invoice is only possible for corporate clients. |
NL, BE, LU |
Payment by invoice, payment in advance |
Payment by invoice is only possible for corporate clients |
Other countries |
Payment in advance |
|
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. |
Firma: Waters
The Waters 474 Scanning Fluorescence Detector is a high-performance unit that provides a high level of sensitivity for spectrofluorometric analysis.
Features
The Waters 474 Scanning Fluorescence Detector includes:
An optical design that maximizes sensitivity
Microprocessor control for greater versatility and reliability
An emission wavelength sweep function so you can obtain an emission spectrum
An excitation wavelength sweep function so you can obtain an excitation spectrum
An automatic second-order filter to enhance applications in the visible wavelength range
Optional optical filters that can be installed on the flow cell for specialized measurements
Quartz flow cell or cuvette cell, permitting measurement of ultraviolet fluorescence
Nine-stage photomultiplier tube for amplifying the emission radiation
Photodetector to compensate for excitation fluctuations throughout a scan
An RS-232 port to allow connectivity to the Millennium 32 data system
There are three critical optical design features in the 474 detector-.
A highly energy-efficient optics system that does not use lenses, minimizing reflection loss
An optics system that uses holographic concave diffraction gratings and aspherical mirrors to provide highly efficient monochromators in a Compact package
A 150 VV Xenon lamp that provides greater light energy for excitation
There are five critical microprocessor-based features:
Operating parameters that are set using the keypad
A multi-line liquid crystal display (LCD) that provides Information on the status of the 474 detector
Self-diagnostic messages that are displayed on the LCD
Digital processing that controls the entire signal processing system, assuring higher reliability and operational stability
An auto-zero feature that provides a wide range of Offset adjustment for the analog output
Operational Specifications
Monochromator Holographic concave diffraction grating (for both excitation and emission)
Light source 150 W Xenon lamp
Wavelength range 200 to 700 nm (for excitation and emission). Can be set from 0 to 900
Spectrum band width Excitation: 18 nm
Emission: 10, 18, or 40 nm (set an keypad)
Wavelength accuracy ±2 nm
Wavelength repeatability ±0.3 nm
Detector Excitation-. Photodiode
Emission-. Photomultiplier tube
Second order filter Automatically inserted into light path when Ex > 400 nm
Flow cell 16 µL (standard) or 5 µL
Maximum flow cell pressure 16 µL: 145 psi (10 bar)
5 µL: 500 psi (34.5 bar)
Wetted surfaces
Synthetic silica, fluororesin, PEEK, stainless steel
SXS-316
Sensitivity S/N for the Raman peak of water is 320 or above, where Ex λ = 350 nm and time constant is 1.5 sec, 16 µL cell (Instruments shipped prior to June 1997, S/N for the Raman peak of water is 200 or above)
Attenuation range (Recorder output) Ten steps, including 1, 2, 4, 8, 16, 32, 64, 128, 256, S
Gain range 1, 10, 100, 1000
Response Fast, Standard, Slow, and digital filter
Signal processing Digital processing by A/D and D/A converters (with surrounding temperature compensation circuits)
Outputs Recorder: 10 mV full-scale (can be inverted)
Integrator: 1 V full-scale
Marker output
Leak output
Inputs Marker input
Auto Zero input
Program reset
Program functions Time program with following variables:
Wavelength change (excitation and emission)
Gain
Attenuation
Wavelength scan
Ex, Em Spectra
Wavelength scan functions Manual and time program parameters:
Time
Interval
Amplitude
Memory location
Ex, Em Spectra
Spectrum storage Ten locations for both emission and excitation spectra
Self-test diagnostics Memory (ROM and RAM)
DC power
Excitation energy decrease
Leak in cell
Lamp use time
Lamp use timer
Internat timer for accumulating the total hours an the
Xenon Iamp
Dimensions Width. 11.81 inches (300 mm)
Height: 5.90 inches (150 mm)
Depth: 18.11 inches (460 mm)
Weight 41.8 pounds (19 kg)
Power requirement 115 VAC (90 to 132 V), 50/60 Hz
230 VAC (187 to 264 V), 50/60 Hz
Power consumption 300 W maximum
Ambient temperature 10 °C to 32 °C (50 °F to 90 °F) operation
10 °C to 60 °C (50 °F to 140 °F) storage
Relative humidity 20 to 80%, non-condensing