707 sq 250m

Q: How does 707 sq 250m stand out among laboratory sample containers and spectroscopic equipment?

The 707 sq 250m distinguishes itself through precision manufacturing and specialized design. While alternative products include offerings from Wilmad, Bruker, and other scientific equipment manufacturers, this model offers superior dimensional accuracy, material consistency, and compatibility with advanced spectroscopic systems.

Q: What specific identification parameters should I use when referencing 707 sq 250m in scientific documentation?

When citing 707 sq 250m, include the full product catalog number, manufacturer (Wilmad), material specifications, dimensional measurements, and recommended usage parameters. Typical citation formats include the product's unique identifier followed by manufacturer details for precise scientific referencing.

Q: What laboratory systems and spectroscopic configurations are compatible with 707 sq 250m?

707 sq 250m demonstrates broad compatibility with EPR spectrometers, including Bruker EMX models, Oxford Instruments ESR systems, and various X-band spectroscopic configurations. It integrates seamlessly with cryostats, resonators, and advanced scientific instrumentation.

Q: In what specific research domains is 707 sq 250m primarily utilized?

This product is predominantly employed in advanced spectroscopic research, including electron paramagnetic resonance (EPR) studies, materials science investigations, quantum physics experiments, and molecular characterization across biochemical, physical, and chemical research disciplines.

Q: What unique scientific characteristic makes 707 sq 250m notable in research environments?

The 707 sq 250m represents a critical advancement in precision sample containment, enabling ultra-sensitive measurements with minimal interference. Its design allows researchers to conduct experiments with unprecedented accuracy, bridging gaps in spectroscopic measurement capabilities.

Manufactured by Wilmad

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About the product

The 707-SQ-250M is a laboratory equipment product manufactured by Wilmad. It is a square quartz cell with a path length of 250 millimeters. The product is designed for use in various spectroscopic applications, but no further details about its intended use or function are provided.

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Spelling variants (same manufacturer)

Labglass 707-SQ-250M - 4 citations SQ-707 - 2 citations 707-SQ-250M EPR tubes - 2 citations

The spelling variants listed below correspond to different ways the product may be referred to in scientific literature.
These variants have been automatically detected by our extraction engine, which groups similar formulations based on semantic similarity.

Product FAQ

How does 707 sq 250m stand out among laboratory sample containers and spectroscopic equipment?

What specific identification parameters should I use when referencing 707 sq 250m in scientific documentation?

What laboratory systems and spectroscopic configurations are compatible with 707 sq 250m?

In what specific research domains is 707 sq 250m primarily utilized?

What unique scientific characteristic makes 707 sq 250m notable in research environments?

26 protocols using «707 sq 250m»

X-band EPR Analysis of MagR Proteins

2024

X-band (9.6 GHz) EPR spectra of the MagR proteins were recorded using an EMX plus 10/12 spectrometer (Bruker, USA), equipped with an Oxford ESR-910 liquid helium cryostat. Briefly, 1 mmol/L oxidized proteins (as-purified) in buffer E (20 mmol/L Tris, 150 mmol/L NaCl, 5 mmol/L d-desthiobiotin, pH8.0) were mixed in a total volume of 200 μL with 50 μL of glycerol, respectively. The 1 mmol/L reduced proteins were obtained by adding 2 μL of Na₂S₂O₄ (1 mol/L) to the protein samples. The protein samples were then transferred into a 4 mm diameter quartz EPR tube (Wilmad 707-SQ-250 M, USA) and frozen in liquid nitrogen. The EPR signals of the oxidized and reduced proteins were recorded at different temperatures (10, 25, 45, and 60 K). The EPR conditions were: microwave frequency, 9.4 GHz; microwave power, 2 mW; modulation frequency, 100 kHz; modulation amplitude, 2 G; receive gain, 1.0×10⁴.

Wang S., Zhang P., Fei F., Tong T., Zhou X., Zhou Y., Zhang J., Wei M., Zhang Y., Zhang L., Huang Y., Zhang L., Zhang X., Cai T, & Xie C. (2024). Unexpected divergence in magnetoreceptor MagR from robin and pigeon linked to two sequence variations. Zoological Research, 45(1), 69-78.

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EPR Spectroscopy of Iron-Sulfur Proteins

2024

The cells expressing clMagR^WT, clMagR^3M, ecIscA, EntB, FepA or none, were harvested and resuspended in LB medium containing 20 mM deferoxamine and incubated at 37°C for anther 15 min as described by the Imlay's group in 2002 [35 (link)]. Then, the cells were washed with 10 mM diethylenetriaminepentaacetic acid once, and 20 mM cold Tris-HCl (pH = 7.4) twice and resuspended in 20 mM cold Tris-HCl (pH = 7.4). 200 μL of the above samples were mixed with 50 μL of glycerol and transferred to an EPR tube (Wilmad 707-SQ-250 M, USA) and frozen in liquid nitrogen until EPR measurements. The EPR signals were monitored at different temperatures (10 K) with a microwave frequency of 9.40 GHz, a microwave power of 2 mW, a modulation amplitude of 2.0 G and a receive gain of 1.0 × 10⁴.

Wei M., Han C., Zhou X., Tong T., Zhang J., Ji X., Zhang P., Zhang Y., Liu Y., Zhang X., Cai T, & Xie C. (2024). Filamentous morphology engineering of bacteria by iron metabolism modulation through MagR expression. Synthetic and Systems Biotechnology, 9(3), 522-530.

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EPR Spectroscopy of Oxidized and Reduced Proteins

2024

X-band EPR spectra were recorded at various temperatures (10 K, 25 K, 45 K, and 60 K) using an EMX plus 10/12 Spectrometer (Bruker, Germany) equipped with an Oxford ESR910 Liquid Helium cryostat. The oxidized EPR samples were prepared by mixing 200 μL of 1 mmol/L purified protein with 50 μL of glycerol, while the reduced samples were obtained by adding sodium dithionite to a final concentration of 10 mmol/L to the above protein solutions. The protein samples were transferred to quartz EPR tubes (Wilmad 707-SQ-250 M, France) and frozen in liquid nitrogen. The EPR signals were collected at a microwave frequency of 9.40 GHz, microwave power of 2 mW, modulation amplitude of 2.0 G, receive gain of 1.0×10⁴, and sweep time of 25.60 s.

Zhang Y., Zhang P., Wang J., Zhang J., Tong T., Zhou X., Zhou Y., Wei M., Feng C., Li J., Zhang X., Xie C, & Cai T. (2024). Mitochondrial targeting sequence of magnetoreceptor MagR: More than just targeting. Zoological Research, 45(3), 468-477.

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X-band EPR Spectroscopy of Oxidized Proteins

2024

X-band (9.6 GHz) electron paramagnetic resonance (EPR) spectra were recorded using an EMX plus 10/12 spectrometer (Bruker, Billerica, MA) equipped with an Oxford ESR-910 liquid helium cryostat. For oxidized protein samples, 50 µL of glycerol was added to 200 µL of 1 mmol/L sample. The protein samples were then injected into quartz EPR tubes (Wilmad 707-SQ-250 M, USA) and frozen with liquid nitrogen. The EPR signals were collected at different temperatures (10 K, 25 K, 45 K, and 60 K) under a microwave frequency of 9.40 GHz, microwave power of 2 mW, modulation amplitude of 2.0 G, and receive gain of 1.0×10⁴.

Zhang J., Chang Y., Zhang P., Zhang Y., Wei M., Han C., Wang S., Lu H.M., Cai T, & Xie C. (2024). On the evolutionary trail of MagRs. Zoological Research, 45(4), 821-830.

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In situ EPR Analysis of eCO2RR

2024

Time-dependent continuous-wave (CW) EPR measurements at X-band frequencies (9.4 GHz) were performed using a Bruker EMX Micro EPR spectrometer. DMPO was used as a spin trap. The electrochemical cell used for in situ EPR testing is the same as that used for the in situ XAS setup. All electrochemistry procedures are identical, except that the electrochemical test was performed in a CO₂-saturated 0.1 M KHCO₃ electrolyte (pH = 6.8 ± 0.3) containing 10 mM of DMPO. During eCO₂RR, 10 μL of samples were taken from the electrochemical cell and transferred into 1 mm ID, 2 mm OD EPR tube (712-SQ-100M Wilmad LabGlass). For EPR measurements, these tubes were placed into 3 mm ID 4 mm OD EPR tubes (707-SQ-250M Wilmad LabGlass). For all the measurements, the microwave power was set to 1.262 mW (22 dB microwave power attenuation) and modulation amplitude was 2 G at a modulation frequency of 100 kHz. EPR spectra were simulated using EasySpin software^{42 (link)}.

Wang L., Chen Z., Xiao Y., Huang L., Wang X., Fruehwald H., Akhmetzyanov D., Hanson M., Chen Z., Chen N., Billinghurst B., Smith R.D., Singh C.V., Tan Z, & Wu Y.A. (2024). Stabilized Cuδ+-OH species on in situ reconstructed Cu nanoparticles for CO2-to-C2H4 conversion in neutral media. Nature Communications, 15, 7477.

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