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Spectrophotometer U-3900/3900H

Spectrophotometer U-3900/3900H

Spectrophotometer U-3900/3900H

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Description

Spesifikasi Teknis Spectrophotometer Hitachi U-3900

1. Sistem Optik

  • Tipe: Double-beam dengan sistem dispersi menggunakan grating holografik.

  • Sumber Cahaya:

    • Lampu Deuterium (D₂): Rentang UV (190–360 nm).

    • Lampu Tungsten-Halogen (WI): Rentang Visible-NIR (360–900 nm).

  • Monokromator:

    • Grating ganda (UV/Vis dan Vis-NIR) untuk reduksi stray light.

    • Focal length: 300 mm.

  • Bandwidth Spectral: Variabel (0.1 nm, 0.5 nm, 1 nm, 2 nm, 5 nm).

  • Panjang Gelombang:

    • Rentang: 190–900 nm (dapat diperluas hingga 1,100 nm dengan aksesori NIR).

    • Akurasi: ±0.1 nm (pada 656.1 nm).

    • Reproduksibilitas: ±0.02 nm.

2. Detektor

  • Photomultiplier Tube (PMT) untuk sensitivitas tinggi.

  • Detektor InGaAs opsional untuk rentang NIR (900–1,100 nm).

3. Performa Pengukuran

  • Rentang Absorbansi: -4.0 hingga 6.0 Abs.

  • Akurasi Absorbansi: ±0.002 Abs (pada 1.0 Abs, 340 nm).

  • Stabilitas Baseline: ±0.0003 Abs/jam (setelah pemanasan).

  • Noise: ≤0.0001 Abs (pada 500 nm, bandwidth 2 nm).

  • Stray Light: <0.00005% (220 nm, NaI).

4. Kecepatan Pemindaian

  • Kecepatan Scan: 1–3,000 nm/menit (adjustable).

  • Interval Data: 0.1 nm (minimum).

5. Fitur Operasional

  • Modus Pengukuran:

    • Absorbansi (%T), Transmitansi (%T), Energi (E).

    • Kinetics (time course), Multi-wavelength, Spectrum scan.

  • Kontrol Suhu: Opsional dengan sel termostat.

  • Konektivitas:

    • USB, RS-232, LAN.

    • Software UV Solutions untuk analisis data dan kontrol instrumen.

6. Sampel dan Kuplet

  • Holder Kuplet: Kompatibel dengan kuplet 10 mm (standar), mikro-volum (1.5 µL), dan flow cell.

  • Automation: Opsional autosampler (mis. Hitachi AS-3X series).

7. Display dan Kontrol

  • Tampilan: Layar LCD warna dengan antarmuka intuitif.

  • Tombol Operasi: Keypad + navigasi touch panel.

8. Dimensi dan Berat

  • Dimensi: 450 mm (W) × 450 mm (D) × 250 mm (H).

  • Berat: ~20 kg.

9. Persyaratan Daya

  • Daya: AC 100–240 V, 50/60 Hz, 300 W.

10. Lingkungan Operasi

  • Suhu: 15–35°C.

  • Kelembapan: 10–80% RH (non-kondensasi).

11. Aplikasi

  • Farmasi: Uji kemurnian, dissolution testing.

  • Bioteknologi: Kuantifikasi DNA/RNA, protein (Bradford, Lowry).

  • Kimia: Analisis kinetika reaksi, kontrol kualitas.

  • Lingkungan: Pengukuran polutan (nitrat, fosfat).

12. Aksesori Standar/Opsional

  • Software UV Solutions (termasuk farmakope USP/EP).

  • Integrating Sphere untuk sampel padat/opaque.

  • Peltier Thermostatted Cell Holder (kontrol suhu ±0.1°C).

  • Autosampler (hingga 120 sampel).

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