2.2.1 Removing air from Vessel 1

Once the system has been pressurised, tap A on Vessel 1 can be opened. It is possible to bubbled helium gas through the sample liquid against the non-return valve, V13. If this is required, first ensure that valves V5, V7 and V8 are closed. Open valves V10 and V6, finally opening tap B slowly in order to regulate the flow.

To fully evacuate the system and Vessel 1, the sample liquid must be frozen by raising a dewar of liquid nitrogen around it. When the sample is frozen, a vacuum can be achieved by switching the pump to its roughing mode and opening valve V1. For a high vacuum, switch the pump to turbo.

2.2.2 Removing air from Vessel 2

Once the system has been pressurised, tap E on Vessel 2 can be opened. It is possible to bubbled helium gas through the sample liquid against the non-return valve, V13. If this is required, first ensure that valves V5, V6 and V8 are closed. Valve V10 can now be opened and slowly opening V7 allows the gas flow to be regulated.

To fully evacuate the system and Vessel 2, the sample liquid must be frozen by raising a dewar of liquid nitrogen around it. When the sample is frozen, a vacuum can be achieved by switching the pump to its roughing mode and opening valve V1. For a high vacuum, switch the pump to turbo.

2.2.3 Removing air from Vessel 3

Once the system has been pressurised, tap C on Vessel 3 can be opened. It is possible to bubbled helium gas through the sample liquid against the non-return valve, V13. If this is required, first ensure that valves V5, V6 and V7 are closed. Valves V10 and V8 can now be opened and slowly opening tap D allows the gas flow to be regulated.

To fully evacuate the system and Vessel 3, the sample liquid must be frozen by raising a dewar of liquid nitrogen around it. When the sample is frozen, a vacuum can be achieved by switching the pump to its roughing mode and opening valve V1. For a high vacuum, switch the pump to turbo.

2.2.4 Evacuation of the sample cell

Once the system has been purged of oxygen, the sample cell can be evacuated. To do this, ensure that all the taps on the sample vessels are closed and the pump is switched to its roughing mode. Open valves V1, V2 and V3 to evacuate the system. Opening valve V4 will evacuate the sample cell. Switch the pump to turbo mode and leave to pump for as long as possible. When the sample cell is sufficiently clean, close valves V1 and V4 and let the system up to atmosphere using helium.

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Boca Research None manual Removing air from Vessel, Evacuation of the sample cell
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None specifications

Boca Research, a prominent name in the realm of computer hardware and technology, emerged in the mid-1990s, focusing on developing high-performance peripherals and connectivity solutions. Initially known for their innovative products in the modem and network card markets, Boca Research set a precedent for compatibility and reliability in personal computing.

One of the flagship products of Boca Research was their line of dial-up modems, which became a staple in households and offices as the internet began to gain traction. These modems were designed to be user-friendly and accessible, catering to both novice users and tech-savvy individuals. With features that included plug-and-play installation and robust driver support, Boca Research modems facilitated seamless internet connectivity, contributing significantly to the increasing popularity of online services during the late 1990s.

Boca Research also made significant strides in the production of network interface cards (NICs), which allowed computers to connect to local area networks (LANs). Their NICs were engineered for optimal performance and were often lauded for their stability when handling data traffic. Support for various protocols ensured that users could easily integrate Boca Research's products into existing network infrastructures without compatibility issues.

In addition to these core products, Boca Research expanded its portfolio to include various accessories and add-ons that enhanced the computing experience. This included video capture cards, which allowed users to record and edit video content directly on their computers, and high-quality sound cards that delivered enhanced audio experiences for gaming and multimedia applications.

The proprietary technologies developed by Boca Research placed a significant emphasis on user experience, reliability, and performance. The company was known for its commitment to customer support, ensuring that users received timely assistance and effective solutions to any issues they encountered.

As a pioneer in the peripheral and connectivity market, Boca Research's contributions helped shape the landscape of personal computing during a pivotal time of technological advancement. Their blend of innovation and practicality made advanced technology accessible to users, reflecting a dedication that resonates in the industry even today. Though the company's presence in the market has diminished over the years, its legacy continues to influence many aspects of contemporary computer hardware development.
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