Jasco J-815 Spectropolarimeter

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Manufacturer Jasco
Model J-815
Year
Location USA US
Loick
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Loick L.

Automatic description (AI-Generated)

The Jasco J-815 Circular Dichroism (CD) Spectrometer is a precision instrument designed for measuring differences in the absorption of left- and right-handed polarized light, which arise due to structural asymmetry in samples. This technique is essential for analyzing the secondary and tertiary structures of biomolecules, as well as studying optically active substances.

Applications for the J-815 include protein folding and conformational studies, DNA/RNA interaction analysis, enzyme kinetics, purity testing of chiral compounds, quantitative pharmaceutical analysis, natural organic chemistry, and biochemistry research involving macromolecules. It also supports rapid scanning for time-resolved experiments.

Key specifications include a 150W air-cooled Xenon lamp as the light source and a measurement wavelength range of 163 to 900 nm with the standard detector, extendable to 1100 nm with an optional detector. The instrument offers high wavelength accuracy and repeatability across different spectral ranges, with spectral bandwidth adjustable from 0.01 to 15 nm and slit widths from 1 to 3000 µm. The digital integration time can be set between 0.5 milliseconds and 32 seconds. Multiple acquisition modes are available, including wavelength scanning (with three modes), time scanning for slow and fast kinetics, and temperature scanning.

Scanning speeds range from 1 to 10,000 nm/min in continuous scan mode, with data intervals adjustable from 0.025 to 10 nm for continuous scans and 0.1 to 100 nm for step scans. The CD signal full scale ranges from ±10 to ±2000 millidegrees, with resolution as fine as 0.0005 mdeg at the lowest full scale.

Physically, the spectrometer measures 1115 mm in width, 576 mm in depth, and 410 mm in height, weighing approximately 87 kg.

The unit features a white exterior with a closed top cover, a green power switch located on the front lower left side, and a blue cylindrical component on the right side. The rear panel includes multiple labeled ports such as CD In, ORD In, Accessory, and PS In, with several cables connected. A large blue motor or fan unit is also attached on the right side at the back. The surface and components appear clean and in good condition, with no visible damage to the exterior or back panel.

The following description has been generated using artificial intelligence based on the product information available. It is provided for guidance only and may not reflect all specifications or conditions. Please contact us if you need precise or confirmed details.

Seller's description

J-815 circular dichroism spectrometer

Circular Dichroism (CD) spectroscopy measures differences in the absorption of left-handed polarized light versus right-handed polarized light that arise due to structural asymmetry. The absence of regular structure results in zero CD intensity, while an ordered structure results in a spectrum which can contain both positive and negative signals.


Applications
Protein folding studies
Protein conformational studies
DNA/RNA interactions
Enzyme kinetics
Purity testing of optically active substances
Quantitative analysis of pharmaceuticals
Natural organic chemistry
Biochemistry and macromolecules
Rapid scanning (time resolved) experiments
Condition:
This instrument is in good working

Specifications:
Light source: 150W air-cooled Xe lamp
Measurement wavelength range: 163 to 900 nm (standard detector); 163 to 1100 nm (optional detector)
Wavelength accuracy: ±0.2 nm (at 163 to 180 nm); ±0.1 nm (at 180 to 250 nm); ±0.3 nm (at 250 to 500 nm); ±0.8 nm (at 500 to 800 nm), ±2.0 nm (at 800 to 1100 nm)
Wavelength repeatability: ±0.05 nm (at 163 to 250 nm); ±0.1 nm (at 250 to 500 nm); ±0.2 nm (at 500 to 1100 nm)
Spectral bandwidth: 0.01 to 15 nm
Slit width: 1 to 3000 µm
Digital Integration Time (D.I.T.): 0.5 msec to 32 sec
Acquisition modes: Wavelength scan (3 modes), Time scan (slow and fast kinetics), Temperature scan
Scanning speeds: 1 to 10000 nm/min (continuous scan)
Data interval: 0.025 to 10 nm (continuous scan); 0.1 to 100 nm (step scan); 0.5 msec to 60 min (time course)
CD full scale: ±10, 200, 2000 mdeg
CD resolution: 0.0005 mdeg (at ±10 mdeg full scale); 0.01 mdeg ( at ±200 mdeg full scale); 0.1 mdeg ( at ±2000 mdeg full scale)
Stray light: Less than 0.0003% (200 nm)
Dimensions: 1115 (W) x 576 (D) x 410 (H) mm
Weight: 87 kg

Please note that this description may have been translated or optimized with artificial intelligence (AI) automatically. The information of this classified ad are only indicative. We recommend to check the details with the seller before a purchase.


Client type Machinery dealer
Active since 2019
Offers online 57
Last activity Nov. 3, 2026

Seller's description

J-815 circular dichroism spectrometer

Circular Dichroism (CD) spectroscopy measures differences in the absorption of left-handed polarized light versus right-handed polarized light that arise due to structural asymmetry. The absence of regular structure results in zero CD intensity, while an ordered structure results in a spectrum which can contain both positive and negative signals.


Applications
Protein folding studies
Protein conformational studies
DNA/RNA interactions
Enzyme kinetics
Purity testing of optically active substances
Quantitative analysis of pharmaceuticals
Natural organic chemistry
Biochemistry and macromolecules
Rapid scanning (time resolved) experiments
Condition:
This instrument is in good working

Specifications:
Light source: 150W air-cooled Xe lamp
Measurement wavelength range: 163 to 900 nm (standard detector); 163 to 1100 nm (optional detector)
Wavelength accuracy: ±0.2 nm (at 163 to 180 nm); ±0.1 nm (at 180 to 250 nm); ±0.3 nm (at 250 to 500 nm); ±0.8 nm (at 500 to 800 nm), ±2.0 nm (at 800 to 1100 nm)
Wavelength repeatability: ±0.05 nm (at 163 to 250 nm); ±0.1 nm (at 250 to 500 nm); ±0.2 nm (at 500 to 1100 nm)
Spectral bandwidth: 0.01 to 15 nm
Slit width: 1 to 3000 µm
Digital Integration Time (D.I.T.): 0.5 msec to 32 sec
Acquisition modes: Wavelength scan (3 modes), Time scan (slow and fast kinetics), Temperature scan
Scanning speeds: 1 to 10000 nm/min (continuous scan)
Data interval: 0.025 to 10 nm (continuous scan); 0.1 to 100 nm (step scan); 0.5 msec to 60 min (time course)
CD full scale: ±10, 200, 2000 mdeg
CD resolution: 0.0005 mdeg (at ±10 mdeg full scale); 0.01 mdeg ( at ±200 mdeg full scale); 0.1 mdeg ( at ±2000 mdeg full scale)
Stray light: Less than 0.0003% (200 nm)
Dimensions: 1115 (W) x 576 (D) x 410 (H) mm
Weight: 87 kg

Please note that this description may have been translated or optimized with artificial intelligence (AI) automatically. The information of this classified ad are only indicative. We recommend to check the details with the seller before a purchase.



Automatic description (AI-Generated)

The Jasco J-815 Circular Dichroism (CD) Spectrometer is a precision instrument designed for measuring differences in the absorption of left- and right-handed polarized light, which arise due to structural asymmetry in samples. This technique is essential for analyzing the secondary and tertiary structures of biomolecules, as well as studying optically active substances.

Applications for the J-815 include protein folding and conformational studies, DNA/RNA interaction analysis, enzyme kinetics, purity testing of chiral compounds, quantitative pharmaceutical analysis, natural organic chemistry, and biochemistry research involving macromolecules. It also supports rapid scanning for time-resolved experiments.

Key specifications include a 150W air-cooled Xenon lamp as the light source and a measurement wavelength range of 163 to 900 nm with the standard detector, extendable to 1100 nm with an optional detector. The instrument offers high wavelength accuracy and repeatability across different spectral ranges, with spectral bandwidth adjustable from 0.01 to 15 nm and slit widths from 1 to 3000 µm. The digital integration time can be set between 0.5 milliseconds and 32 seconds. Multiple acquisition modes are available, including wavelength scanning (with three modes), time scanning for slow and fast kinetics, and temperature scanning.

Scanning speeds range from 1 to 10,000 nm/min in continuous scan mode, with data intervals adjustable from 0.025 to 10 nm for continuous scans and 0.1 to 100 nm for step scans. The CD signal full scale ranges from ±10 to ±2000 millidegrees, with resolution as fine as 0.0005 mdeg at the lowest full scale.

Physically, the spectrometer measures 1115 mm in width, 576 mm in depth, and 410 mm in height, weighing approximately 87 kg.

The unit features a white exterior with a closed top cover, a green power switch located on the front lower left side, and a blue cylindrical component on the right side. The rear panel includes multiple labeled ports such as CD In, ORD In, Accessory, and PS In, with several cables connected. A large blue motor or fan unit is also attached on the right side at the back. The surface and components appear clean and in good condition, with no visible damage to the exterior or back panel.

The following description has been generated using artificial intelligence based on the product information available. It is provided for guidance only and may not reflect all specifications or conditions. Please contact us if you need precise or confirmed details.


About this seller

Client type Machinery dealer
Active since 2019
Offers online 57
Last activity Nov. 3, 2026

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