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Frequently Asked Questions
What are Apex Instruments, Inc. hours of operation?
How do I contact Apex Instruments, Inc.?
What types of payment does Apex Instruments, Inc. accept?
How can I be approved for company credit?
How quickly can I receive my order? What are Apex Instruments average shipping times?
How do I request a price list?
How do I request a product catalog?
How can I find a complete list of part numbers and/or kit configurations?
Does Apex Instruments, Inc. have distributors in the United States?
Does Apex Instruments, Inc. have international distributors?
Do I need an RMA (Return Merchandise Authorization) to return items I have purchased from Apex Instruments, Inc.?
What is the temperature rating for your materials?
What is the watts per foot for your heated sample lines?
What is the metal content of your filters?
How do you reset the Timer on your meter consoles?
How do I check the Optical Encoder on the SK-25 Dry Gas Meter?
How do I program the Digital Totalizer?
What is the Uncertainty in Source Monitoring Measurements?
Why is there only one Thermocouple on your Dry Gas Meter when the Method specifies two?
What type of oil do we need for lubrication of pump?
What are Apex Instruments, Inc. hours of operation?
For your convenience, we are open Monday through Friday from 8:00 am until 5:00 p.m. (EST).
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What types of payment does Apex Instruments, Inc. accept?
Apex Instruments, Inc. accepts MasterCard, VISA, American Express and wire transfer. Company purchase orders are acceptable upon credit approval.
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How can I be approved for company credit?
To request a credit application, please fill out an Information Request Form or email accounting@apexinst.com. Please allow for processing time.
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How quickly can I receive my order? What are Apex Instruments, Inc. average shipping times?
Most orders are shipped within 24 hours of receipt. Please allow extra time for custom orders. Shipping times vary according to the requested shipping service. If you have questions about your shipment please email our shipping management at shipping@apexinst.com.
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How do I contact Apex Instruments, Inc.?
Please send mail to our address at:
Apex Instruments, Inc.
204 Technology Park Lane
Fuquay-Varina, NC 27526 USA
Or by phone or fax:
In U.S. Call Toll Free:
1-800-882-3214
Local: 1-919-557-7300
fax: 1-919-557-7110
Or by e-mail: info@apexinst.com
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How do I request a price list?
To request a price list please fill out our Information Request Form. We will forward you a price list ASAP.
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How do I request a product catalog?
Our full list of product are represented in our Product Area. For fast information please visit our product area. However, to request a product catalog please fill out our Information Request Form. We will forward you a catalog ASAP.
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How can I find a complete list of part numbers and/or kit configurations?
Please refer to our price list for a complete list of part numbers and kit configurations. If you do not have a price list you can download our complete Product List as an Adobe Acrobat PDF or fill out an Information Request Form and we will forward a Price List to you.
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Does Apex Instruments, Inc. have distributors in the United States?
No. Apex Instruments, Inc. is the sole distributor of our products in the United States. For a list of our distributors worldwide follow the link at the top of your browser or click here.
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Does Apex Instruments, Inc. have international distributors?
Yes. Apex Instruments, Inc. has distributors in more than 30 countries worldwide. For a list of our distributors worldwide follow the link at the top of your browser or click here.
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Do I need an RMA (Return Merchandise Authorization) to return items I have purchased from Apex Instruments, Inc.?
Yes. Customers wishing to return items for service or credit need to contact our sales associates for an RMA. Contact by email at sales@apexinst.com or by phone (919) 557-7300 or toll free (800) 882-3214.
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What is the temperature rating for your materials?
The temperature rating for our materials can be found below.
| Recommended Maximum Temperatures |
| Material |
Maximum Temperature |
| Stainless Steel |
650°C (1200°F) |
| PFA Fittings |
177°C (350°F) |
| Borosilicate Glass |
480°C (900°F) |
| Inconel |
980°C (1800°F) |
| Quartz |
900°C (1650°F) |
| Viton® O-rings |
260°C (500°C) |
| Graphite Ferrules |
980°C (1800°F) |
| Glass Filled PTFE |
315°C (600°F) |
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What is the watts per foot for your heated sample lines?
The watts per foot for our heated sample lines is 20 watts per foot. Click here for more information on our heated sample lines.
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What is the metal content of your filters?
Please click here for a pdf listing of the metal content of our filters.
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How do you reset the Timer on your meter consoles?
Please click here for pdf directions of how to reset the timer. (Also can be found on page 42 of our Method 6 Manual.)
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How do I check the Optical Encoder on the SK-25 Dry Gas Meter?
Please click here for pdf directions of how to check the optical encoder. (Also can be found on page 34 of our Method 6 Manual.)
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How do I program the Digital Totalizer?
Please click here for pdf directions of how to program the Digital Totalizer. (Also can be found on pages 35 and 36 of our Method 6 Manual)
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What is the Uncertainty in Source Monitoring Measurements?
Please click here for pdf presentation on Uncertainty in Source Monitoring Measurement.
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Why is there only one Thermocouple on your Dry Gas Meter when the Method specifies two?
Please click here for pdf letter from US EPA on Method modification.
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What type of oil do we use for lubrication of the pumps?
Use Gast AD220 Oil (Part #AD220), or a high detegent SAE-10 or SAE-5 automotive engine oil may be used as an equivalent to Gast AD220. In ambient locations with temperatures over 38°C (100°F), SAE-20 oil should be used.
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