(i)

Mounting: Floor mounted system for dedicated use in a laboratory.

(ii)

Sample/Detector Positioning System: Goniometer: It Should be fully automated Goniometer. It should have very high angular precision and high angular coverage of minimum 150 deg. 2 Theta. Colour video microscope for easy alignment of samples should be an in-built feature. Video monitor should be inside the enclosure.

(iii)

X-ray Detector & Optics: (a) X-ray Detector: Charge Couple Device (CCD) detector for single crystal frame data collection and imaging/camera, large active area, very high sensitivity of minimum 160 eV or higher per Mo photon, having maximum number of pixel for best resolution and sensitivity, very fast effective read out rate with very high signal to noise ratio, must be equipped with adequate cooling facility, (b) Beam Optics:  Graphite Monochromator with all other necessary accessories/optics for using in both Molybdenum (Mo) and Copper (Cu) radiation.

Powder X-ray data for powder diffraction pattern recording as well as small angle X-ray scattering data acquisition:

The system offered should have the possibility of recording powder X-ray diffraction (PXRD) and small angle X-ray scattering (SAXS) data from microcrystalline sample filled in a capillary mounted on the same goniometer of the system. Suitable software should be provided to convert the frame data collected in the capillary to typical powder diffraction pattern. Suitable software should be provided to analyze the SAXS data. The breakup prices for these facilities should be shown in the financial bid.

(iv)

Environment: (a). Operating Temperature: Approximate: 18 – 30^oC, (b). Operating Humidity: Approximate 5-80% RH.

(v)

X-ray Generator: Computer controlled solid state based X-ray generator with power output of 3KW or above, sealed X-ray generator with maintenance free remote control operation, high speed / safety shutter and fail-safe switch, generator stability ± 0.005% per ± 10% variation in line voltage or better, comprehensive range of alarm and malfunctions indicator for overloading, tube current, cooling water, line voltage, and target cooling, adjustable maximum load capability, display of KV and mA and adjustable through computer. Maintenance: It must be repairable at our laboratory; Original manufacturer of the XRD must confirm this in the quotation.       

(vi).

X-ray Tube: Ceramic X-ray tubes with Molybdenum (Mo) and Copper (Cu) anode with fine focus 2000 Watt or more.  All necessary optics are to be included in the basic system so that both the tubes can be used in the offered system for crystallographic work. While using the Copper radiation, all necessary optics must be included in the basic system in order to achieve high sensitivity for the CCD detector.

(vii)

 Radiation enclosure: Fully X-ray protected enclosure as per international safety norms.

(viii)

Low & high Temperature attachment: Temperature from 80K – 500K equipped with  liquid nitrogen Dewar of minimum 60 Liters capacity or more, pressure regulator, transfer line, line heater and necessary accessories; very low liquid Nitrogen consumption, no icing effect should be ensured. This facility should be offered with breakup price. Optionally the vendor should offer the cryosystem with dedicated LN₂ generator.

(ix)

Computer and Printer-

The computer should be come from the manufacturer of the SXRD system with factory loaded software.

Laser Jet Colour Printer.

(x)

Application software-

WINDOWS XP/ LINUX based application software on GUI platform for instrumental  control for single crystal, twins, low/high temperature, high pressure, charged density and modulated structure. The software should be able to perform complete data acquisition, scaling, space group determination, structure determination and final report generation for publication purpose.

No public domain software is acceptable. Manufacturer must offer their licensed software developed by them.

(xi)

Spares: Ceramic fine focus X-ray tube with molybdenum Anode: One (1) No. In addition, spares for at least 3 years normal operation to be included in the offer. The detail list of spare to be enclosed with the offer for evaluation purpose. Supplier should confirm the availability of spares for next 10 years from the date of installation.

(xii)

Crystal mounting accessories:

Capillaries: Capillaries made of special glass with wall thickness of 0.01 mm and outer diameter of 0.2mm, 0.3 mm, 0.5mm – 25 pcs. Of each type and other necessary capillaries / accessories.

Cryo-loop: 25 cryo-loops for cryo-mounting. 

(xiii)

Test crystal: One test crystals to be included in the basic system

(xiv)

Goniometer Head: 5 (five) Nos. of Goniometer head in the basic system.

(xv)

Warrantee: The single crystal X-ray diffractometer system including X-ray tube, water chiller and UPS quoted for it should be warranted for a period of 36 months from the date of installation. A 2 year Annual Maintenance Contract (AMC) after the expirey of warranty (i.e . after 3 years) should be offered free of charge.

(xvi)

Qualification criteria: The data collected in the offered SXRD system must be publishable as per the Acta Crystallographica guideline. This is applicable for both Mo and Cu radiation.

(xvii)

Pre-Installation requirement: Necessary pre-installation advice should be sent immediately after the placement of the order.

(xviii)

Installation, commissioning and Application Training: Free of cost at site for minimum 10 working days for a group of technical staff/students from operating the instrument to complete structure determination/solution.

(xx)

Service facility in India : Supplier should clearly mention about their service set up in India  for prompt service support along with number of service engineers specially trained on the offered system.

(xxi)

Installation in India: Detailed lists of Indian users for the CCD-based XRD quoted model. There must be at least two same quoted model installed/ordered in India in last 3 years. 

2

External water chiller for the single crystal X-ray diffractometer System:

Both imported and indigenous (ISO certified) chiller for X-ray generator and tube should be offered with breakup prices. After sales service should be provided by the Vendor.

3

UPS for the single crystal X-ray diffractometer system: Suitable 3 – phase input, 3 – phase output on-line UPS with digital signal processor (DSP) control double conversion with IGBT with latest version and at least 20 KVA or more rating capacity with sealed maintenance free batteries, for supporting the XRD system and external water chiller with minimum 1 hour back up time with detailed technical specification from reputed brand manufactures. After sales service should be provided by the Vendor. 

4

Manuals / Circuit-Diagrams and Instruction Sheets: All the manuals including circuit Diagrams and instruction sheets must be supplied in English for the purpose of service engineer’s reference.

5

Validity of quotation: Minimum 4 months.

6

Tender should be submitted in two parts – technical and financial

7

Last date of tender submission: 30^th Nov. 2011