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Lab 1: Gun Bluing

Lab 1: Gun Bluing
Sypnosis

Lab 1: Gun Bluing
Labs Labs will be required during this course. These labs will be hands-on exercises that students will complete on their own. Each student is required to obtain a few easily-accessible items that are necessary to functionally complete each lab. These items will require little or no expense.
After completing each lab exercise, you will post a 1000 word synopsis of your activities and results to the thread that will be provided. The synopsis should include your methodology and findings.
Lab
Supplies:

2 – Small glass coffee cups (from Dollar Store) $2.00

1 – Small bottle of gun bluing (from Wal-Mart or sporting goods store – approx. $2.00)

1 – Pair tweezers

Several coins – quarters work best

Small cheap magnifying glass – this glass may also be used for your trace evidence lab
Instructions:

A. Place approximately 1 ounce of gun bluing into a small coffee cup or other small glass container.

B. Add approximately 1 ounce of water to gun bluing (50:50 mix).

C. Fill second small coffee cup with clean water.

D. Rub forefinger and thumb on forehead in order to ensure that plenty of body oils are on fingers. Dry fingers will be very difficult to work with.

E. Grasp a coin between your forefinger and thumb placing a fingerprint on the coin.

F. Using tweezers, dip coin in to mixture of water and gun bluing.

G. Check every few seconds for developing latent fingerprints.

H. As fingerprints appear on coins, dip the coins into the cup with the clean water to stop development process.

I. You may wish to try this experiment several times using coins and other small metal items that will not be damaged by discoloration.

J. You may need a small magnifying glass to view the fingerprints clearly.

K. Post a synopsis of your findings and experience. Your classmates will post a comment and feedback on your posting.

M. You are to review your fellow classmates’ results and experience and post a comment to their postings. (This counts for your participation grade.)
Process Summary:

Gun bluing contains cupric salt, selenious acid and an acid. Cupric ions and selenious acid are reduced by the oxidized (etched) metals of copper, aluminum, zinc & iron. The reagent etches the coin’s metal surface not protected by sebaceous-containing latent print residue, and deposits a dark-colored Cu-Se coating to reveal friction ridge detail, then immersed into the gun bluing solution. A water bath stops the chemical reaction.
Accepted Deviations:

Should the over-development occur, excess gun blueing may be removed from the metal coins using acidified hydrogen peroxide. A clear lacquer spray can be applied to the coins to stabilize the development process, and, to enhance the contrast of the developed friction ridge detail. A number of gun bluing products sold under various trade names can be used in a diluted solution to reveal friction ridge detail on cartridge surfaces.
2 – Small glass coffee cups (from Dollar Store) $2.00

1 – Small bottle of gun bluing (from Wal-Mart or sporting goods store – approx. $2.00)

1 – Pair tweezers

Several coins – quarters work best

Small cheap magnifying glass – this glass may also be used for your trace evidence lab
Instructions:

A. Place approximately 1 ounce of gun bluing into a small coffee cup or other small glass container.

B. Add approximately 1 ounce of water to gun bluing (50:50 mix).

C. Fill second small coffee cup with clean water.

D. Rub forefinger and thumb on forehead in order to ensure that plenty of body oils are on fingers. Dry fingers will be very difficult to work with.

E. Grasp a coin between your forefinger and thumb placing a fingerprint on the coin.

F. Using tweezers, dip coin in to mixture of water and gun bluing.

G. Check every few seconds for developing latent fingerprints.

H. As fingerprints appear on coins, dip the coins into the cup with the clean water to stop development process.

I. You may wish to try this experiment several times using coins and other small metal items that will not be damaged by discoloration.

J. You may need a small magnifying glass to view the fingerprints clearly.

K. Post a synopsis of your findings and experience. Your classmates will post a comment and feedback on your posting.

M. You are to review your fellow classmates’ results and experience and post a comment to their postings. (This counts for your participation grade.)

Process Summary:
Gun bluing contains cupric salt, selenious acid and an acid. Cupric ions and selenious acid are reduced by the oxidized (etched) metals of copper, aluminum, zinc & iron. The reagent etches the coin’s metal surface not protected by sebaceous-containing latent print residue, and deposits a dark-colored Cu-Se coating to reveal friction ridge detail, then immersed into the gun bluing solution. A water bath stops the chemical reaction.
Accepted Deviations:
Should the over-development occur, excess gun blueing may be removed from the metal coins using acidified hydrogen peroxide. A clear lacquer spray can be applied to the coins to stabilize the development process, and, to enhance the contrast of the developed friction ridge detail. A number of gun bluing products sold under various trade names can be used in a diluted solution to reveal friction ridge detail on cartridge surfaces.

Our Service Charter

  1. Excellent Quality / 100% Plagiarism-Free

    We employ a number of measures to ensure top quality essays. The papers go through a system of quality control prior to delivery. We run plagiarism checks on each paper to ensure that they will be 100% plagiarism-free. So, only clean copies hit customers’ emails. We also never resell the papers completed by our writers. So, once it is checked using a plagiarism checker, the paper will be unique. Speaking of the academic writing standards, we will stick to the assignment brief given by the customer and assign the perfect writer. By saying “the perfect writer” we mean the one having an academic degree in the customer’s study field and positive feedback from other customers.
  2. Free Revisions

    We keep the quality bar of all papers high. But in case you need some extra brilliance to the paper, here’s what to do. First of all, you can choose a top writer. It means that we will assign an expert with a degree in your subject. And secondly, you can rely on our editing services. Our editors will revise your papers, checking whether or not they comply with high standards of academic writing. In addition, editing entails adjusting content if it’s off the topic, adding more sources, refining the language style, and making sure the referencing style is followed.
  3. Confidentiality / 100% No Disclosure

    We make sure that clients’ personal data remains confidential and is not exploited for any purposes beyond those related to our services. We only ask you to provide us with the information that is required to produce the paper according to your writing needs. Please note that the payment info is protected as well. Feel free to refer to the support team for more information about our payment methods. The fact that you used our service is kept secret due to the advanced security standards. So, you can be sure that no one will find out that you got a paper from our writing service.
  4. Money Back Guarantee

    If the writer doesn’t address all the questions on your assignment brief or the delivered paper appears to be off the topic, you can ask for a refund. Or, if it is applicable, you can opt in for free revision within 14-30 days, depending on your paper’s length. The revision or refund request should be sent within 14 days after delivery. The customer gets 100% money-back in case they haven't downloaded the paper. All approved refunds will be returned to the customer’s credit card or Bonus Balance in a form of store credit. Take a note that we will send an extra compensation if the customers goes with a store credit.
  5. 24/7 Customer Support

    We have a support team working 24/7 ready to give your issue concerning the order their immediate attention. If you have any questions about the ordering process, communication with the writer, payment options, feel free to join live chat. Be sure to get a fast response. They can also give you the exact price quote, taking into account the timing, desired academic level of the paper, and the number of pages.

Excellent Quality
Zero Plagiarism
Expert Writers

Lab 1: Gun Bluing
Sypnosis

Lab 1: Gun Bluing
Labs Labs will be required during this course. These labs will be hands-on exercises that students will complete on their own. Each student is required to obtain a few easily-accessible items that are necessary to functionally complete each lab. These items will require little or no expense.
After completing each lab exercise, you will post a 1000 word synopsis of your activities and results to the thread that will be provided. The synopsis should include your methodology and findings.
Lab
Supplies:

2 – Small glass coffee cups (from Dollar Store) $2.00

1 – Small bottle of gun bluing (from Wal-Mart or sporting goods store – approx. $2.00)

1 – Pair tweezers

Several coins – quarters work best

Small cheap magnifying glass – this glass may also be used for your trace evidence lab
Instructions:

A. Place approximately 1 ounce of gun bluing into a small coffee cup or other small glass container.

B. Add approximately 1 ounce of water to gun bluing (50:50 mix).

C. Fill second small coffee cup with clean water.

D. Rub forefinger and thumb on forehead in order to ensure that plenty of body oils are on fingers. Dry fingers will be very difficult to work with.

E. Grasp a coin between your forefinger and thumb placing a fingerprint on the coin.

F. Using tweezers, dip coin in to mixture of water and gun bluing.

G. Check every few seconds for developing latent fingerprints.

H. As fingerprints appear on coins, dip the coins into the cup with the clean water to stop development process.

I. You may wish to try this experiment several times using coins and other small metal items that will not be damaged by discoloration.

J. You may need a small magnifying glass to view the fingerprints clearly.

K. Post a synopsis of your findings and experience. Your classmates will post a comment and feedback on your posting.

M. You are to review your fellow classmates’ results and experience and post a comment to their postings. (This counts for your participation grade.)
Process Summary:

Gun bluing contains cupric salt, selenious acid and an acid. Cupric ions and selenious acid are reduced by the oxidized (etched) metals of copper, aluminum, zinc & iron. The reagent etches the coin’s metal surface not protected by sebaceous-containing latent print residue, and deposits a dark-colored Cu-Se coating to reveal friction ridge detail, then immersed into the gun bluing solution. A water bath stops the chemical reaction.
Accepted Deviations:

Should the over-development occur, excess gun blueing may be removed from the metal coins using acidified hydrogen peroxide. A clear lacquer spray can be applied to the coins to stabilize the development process, and, to enhance the contrast of the developed friction ridge detail. A number of gun bluing products sold under various trade names can be used in a diluted solution to reveal friction ridge detail on cartridge surfaces.
2 – Small glass coffee cups (from Dollar Store) $2.00

1 – Small bottle of gun bluing (from Wal-Mart or sporting goods store – approx. $2.00)

1 – Pair tweezers

Several coins – quarters work best

Small cheap magnifying glass – this glass may also be used for your trace evidence lab
Instructions:

A. Place approximately 1 ounce of gun bluing into a small coffee cup or other small glass container.

B. Add approximately 1 ounce of water to gun bluing (50:50 mix).

C. Fill second small coffee cup with clean water.

D. Rub forefinger and thumb on forehead in order to ensure that plenty of body oils are on fingers. Dry fingers will be very difficult to work with.

E. Grasp a coin between your forefinger and thumb placing a fingerprint on the coin.

F. Using tweezers, dip coin in to mixture of water and gun bluing.

G. Check every few seconds for developing latent fingerprints.

H. As fingerprints appear on coins, dip the coins into the cup with the clean water to stop development process.

I. You may wish to try this experiment several times using coins and other small metal items that will not be damaged by discoloration.

J. You may need a small magnifying glass to view the fingerprints clearly.

K. Post a synopsis of your findings and experience. Your classmates will post a comment and feedback on your posting.

M. You are to review your fellow classmates’ results and experience and post a comment to their postings. (This counts for your participation grade.)

Process Summary:
Gun bluing contains cupric salt, selenious acid and an acid. Cupric ions and selenious acid are reduced by the oxidized (etched) metals of copper, aluminum, zinc & iron. The reagent etches the coin’s metal surface not protected by sebaceous-containing latent print residue, and deposits a dark-colored Cu-Se coating to reveal friction ridge detail, then immersed into the gun bluing solution. A water bath stops the chemical reaction.
Accepted Deviations:
Should the over-development occur, excess gun blueing may be removed from the metal coins using acidified hydrogen peroxide. A clear lacquer spray can be applied to the coins to stabilize the development process, and, to enhance the contrast of the developed friction ridge detail. A number of gun bluing products sold under various trade names can be used in a diluted solution to reveal friction ridge detail on cartridge surfaces.

Our Service Charter

  1. Excellent Quality / 100% Plagiarism-Free

    We employ a number of measures to ensure top quality essays. The papers go through a system of quality control prior to delivery. We run plagiarism checks on each paper to ensure that they will be 100% plagiarism-free. So, only clean copies hit customers’ emails. We also never resell the papers completed by our writers. So, once it is checked using a plagiarism checker, the paper will be unique. Speaking of the academic writing standards, we will stick to the assignment brief given by the customer and assign the perfect writer. By saying “the perfect writer” we mean the one having an academic degree in the customer’s study field and positive feedback from other customers.
  2. Free Revisions

    We keep the quality bar of all papers high. But in case you need some extra brilliance to the paper, here’s what to do. First of all, you can choose a top writer. It means that we will assign an expert with a degree in your subject. And secondly, you can rely on our editing services. Our editors will revise your papers, checking whether or not they comply with high standards of academic writing. In addition, editing entails adjusting content if it’s off the topic, adding more sources, refining the language style, and making sure the referencing style is followed.
  3. Confidentiality / 100% No Disclosure

    We make sure that clients’ personal data remains confidential and is not exploited for any purposes beyond those related to our services. We only ask you to provide us with the information that is required to produce the paper according to your writing needs. Please note that the payment info is protected as well. Feel free to refer to the support team for more information about our payment methods. The fact that you used our service is kept secret due to the advanced security standards. So, you can be sure that no one will find out that you got a paper from our writing service.
  4. Money Back Guarantee

    If the writer doesn’t address all the questions on your assignment brief or the delivered paper appears to be off the topic, you can ask for a refund. Or, if it is applicable, you can opt in for free revision within 14-30 days, depending on your paper’s length. The revision or refund request should be sent within 14 days after delivery. The customer gets 100% money-back in case they haven't downloaded the paper. All approved refunds will be returned to the customer’s credit card or Bonus Balance in a form of store credit. Take a note that we will send an extra compensation if the customers goes with a store credit.
  5. 24/7 Customer Support

    We have a support team working 24/7 ready to give your issue concerning the order their immediate attention. If you have any questions about the ordering process, communication with the writer, payment options, feel free to join live chat. Be sure to get a fast response. They can also give you the exact price quote, taking into account the timing, desired academic level of the paper, and the number of pages.

Excellent Quality
Zero Plagiarism
Expert Writers

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